Re: [neonixie-l] Super easy wall adapter mod: 9V plus 170V at 80mA

I'm interested, too! On Sunday, December 6, 2015 at 11:36:30 PM UTC-3, taylorjpt wrote: > > Ok, these will go out in order of the requests here startin tuesday 12/15 > (in maui till then). > > Jt > -- You received this message because you are subscribed to the Google Groups "neonixie-l"

Re: [neonixie-l] Super easy wall adapter mod: 9V plus 170V at 80mA

I assume I am too late for one? On Sunday, December 6, 2015 at 1:52:27 PM UTC-5, taylorjpt wrote: > > I sent the first fully integrated unit out a few weeks ago (can't remember > to whom) so when I get some feedback I've got 10 more that I can finish up > and send out to the first 10 emails,

Re: [neonixie-l] Super easy wall adapter mod: 9V plus 170V at 80mA

Ok, these will go out in order of the requests here startin tuesday 12/15 (in maui till then). Jt -- You received this message because you are subscribed to the Google Groups "neonixie-l" group. To unsubscribe from this group and stop receiving emails from it, send an email to

Re: [neonixie-l] Super easy wall adapter mod: 9V plus 170V at 80mA

I sent the first fully integrated unit out a few weeks ago (can't remember to whom) so when I get some feedback I've got 10 more that I can finish up and send out to the first 10 emails, starting NOW; 1 per person, 170V and 9V output at 15W total. Jt -- You received this message because you

Re: [neonixie-l] Super easy wall adapter mod: 9V plus 170V at 80mA

I'm interested! Jonathan On 12/6/2015 10:52 AM, taylorjpt wrote: I sent the first fully integrated unit out a few weeks ago (can't remember to whom) so when I get some feedback I've got 10 more that I can finish up and send out to the first 10 emails, starting NOW; 1 per person, 170V and 9V

Re: [neonixie-l] Super easy wall adapter mod: 9V plus 170V at 80mA

If that's still open, I'd be interested! Thanks, Jon. On Sunday, December 6, 2015 at 6:52:27 PM UTC, taylorjpt wrote: > I sent the first fully integrated unit out a few weeks ago (can't remember > to whom) so when I get some feedback I've got 10 more that I can finish up > and send out to

Re: [neonixie-l] Super easy wall adapter mod: 9V plus 170V at 80mA

I am interested too! Cheers, Marcin On 07-Dec-15 05:52, taylorjpt wrote: I sent the first fully integrated unit out a few weeks ago (can't remember to whom) so when I get some feedback I've got 10 more that I can finish up and send out to the first 10 emails, starting NOW; 1 per person, 170V

Re: [neonixie-l] Super easy wall adapter mod: 9V plus 170V at 80mA

I am interested in one. Thank You! Greg On 12/6/2015 11:52 AM, taylorjpt wrote: I sent the first fully integrated unit out a few weeks ago (can't remember to whom) so when I get some feedback I've got 10 more that I can finish up and send out to the first 10 emails, starting NOW; 1 per

Re: [neonixie-l] Super easy wall adapter mod: 9V plus 170V at 80mA

I would like to test one and give a review. Thanks On Sun, Dec 6, 2015 at 4:14 PM, Jonathan Peakall wrote: > I'm interested! > > Jonathan > > On 12/6/2015 10:52 AM, taylorjpt wrote: > >> I sent the first fully integrated unit out a few weeks ago (can't >> remember to

Re: [neonixie-l] Super easy wall adapter mod: 9V plus 170V at 80mA

The probe was connected right at the new HV winding where it enters the rectifier pair. -- You received this message because you are subscribed to the Google Groups "neonixie-l" group. To unsubscribe from this group and stop receiving emails from it, send an email to

Re: [neonixie-l] Super easy wall adapter mod: 9V plus 170V at 80mA

Nice! How would three or four STTH1R06 HV rectifiers work instead of two of the 800V or 1KV versions, just as well or would other problems arise? /Martin On Monday, 9 November 2015 00:48:52 UTC+1, taylorjpt wrote: > > Load testing is done and the transient performance is right on target >

Re: [neonixie-l] Super easy wall adapter mod: 9V plus 170V at 80mA

3 would work just fine at 600x3=1800V vs 800x2=1600. I will switch to the 1KV parts since I already have PWBs. The forward bias efficiency impact will be minimal for two vs three diodes as the forard voltage at these low currents is so much smaller than the output voltage. It may even be a

Re: [neonixie-l] Super easy wall adapter mod: 9V plus 170V at 80mA

Thank you for the answer! I realise I need better probes for my scope to make the measurement you did in the second scope picture, I only have standard probes that aren't rated for those pulse voltages. Where did you hook up the probe to show that trace? /Martin On Monday, 9 November 2015

Re: [neonixie-l] Super easy wall adapter mod: 9V plus 170V at 80mA

Looks nice! I'm still waiting for some spools of transformer tape, 3M 44 margin tape and also 3M 56 polyester tape, I received a bunch of STTH1R06 diodes (the through hole variant) so I can continue experimenting soon. /Martin On Friday, 6 November 2015 00:01:40 UTC+1, taylorjpt wrote: > >

Re: [neonixie-l] Super easy wall adapter mod: 9V plus 170V at 80mA

Shorting the HV output to the 9V output will destroy the 9V output circuits: Rectifier, reference, opto coupler etc as well as probably the user circuit (Unless it is protected). This can't be avoided because of the energy stored in the HV capacitor. This of course would be the same situation

Re: [neonixie-l] Super easy wall adapter mod: 9V plus 170V at 80mA

Would a TranZorb or something similar on the LV output be able to cope with a short from the HV output? /Martin On Sunday, 1 November 2015 12:09:13 UTC+1, taylorjpt wrote: > > Shorting the HV output to the 9V output will destroy the 9V output > circuits: Rectifier, reference, opto coupler etc

Re: [neonixie-l] Super easy wall adapter mod: 9V plus 170V at 80mA

Thanks for the answer! Nice with the keyed contact. /Martin On Sunday, 1 November 2015 12:09:13 UTC+1, taylorjpt wrote: > > Shorting the HV output to the 9V output will destroy the 9V output > circuits: Rectifier, reference, opto coupler etc as well as probably the > user circuit (Unless it

RE: [neonixie-l] Super easy wall adapter mod: 9V plus 170V at 80mA

: Sunday, November 01, 2015 6:09 AM To: neonixie-l Subject: Re: [neonixie-l] Super easy wall adapter mod: 9V plus 170V at 80mA Shorting the HV output to the 9V output will destroy the 9V output circuits: Rectifier, reference, opto coupler etc as well as probably the user circuit (Unless it is protected

Re: [neonixie-l] Super easy wall adapter mod: 9V plus 170V at 80mA

What happens if you short the HV output to the +9V output or to ground? Will both outputs survive and how will it regulate during the short and will it recover when the short is removed? /Martin -- You received this message because you are subscribed to the Google Groups "neonixie-l" group.

RE: [neonixie-l] Super easy wall adapter mod: 9V plus 170V at 80mA

To: neonixie-l@googlegroups.com Subject: Re: [neonixie-l] Super easy wall adapter mod: 9V plus 170V at 80mA > How many people would be interested in an AC adapter that puts out 9V and > 170V at 15W total? These could also be done in a 9V/300V output version. While your existing supplies are very

Re: [neonixie-l] Super easy wall adapter mod: 9V plus 170V at 80mA

> Although tempting, you may want to rethink that. Especially in a pre-amp the > switching noise may be a problem. Possibly not. Switching is at a higher frequency than a mains transformer, which makes it easier to filter out. The usual issue I run into is radiated, inductively coupled, and

RE: [neonixie-l] Super easy wall adapter mod: 9V plus 170V at 80mA

Yes, I will keep rethinking it until I make it work! That's why I have 18 patents. -- You received this message because you are subscribed to the Google Groups "neonixie-l" group. To unsubscribe from this group and stop receiving emails from it, send an email to

Re: [neonixie-l] Super easy wall adapter mod: 9V plus 170V at 80mA

They have been replaced by the newer tech TRG1509. The transformer is smaller as it runs at a higher frequency but the new windings still fit due to the adjusted turns ratio: Model9V170V TR1509 15T 250T TRG1509 11T 184T The TRG1509 adds a faraday shield to the outside of the

Re: [neonixie-l] Super easy wall adapter mod: 9V plus 170V at 80mA

Thanks for pointing out the new model, unfortunately I can only find that one with Mouser but Mouser says: "Due to government regulations, Mouser is unable to sell this product in your country." , so I would still need your help in getting hold of the type with European (Swedish) prongs.

Re: [neonixie-l] Super easy wall adapter mod: 9V plus 170V at 80mA

I decided to buy a few Mean Well switching power supplies the other day as I found them on sale for SEK 20kr each (some USD $2) to see if I could modify them - I decided to buy them because they were cheap and I could use them for other stuff if I couldn't rewind them. I have successfully

Re: [neonixie-l] Super easy wall adapter mod: 9V plus 170V at 80mA

I'm using two STTH1R06A in series. The switchers usually operate between 50 an 100kHz so you want to keep the reverse recovery time below 50nS. 25nS or better at the low currents used is pretty easy to find. Just as important is the reverse voltage rating as these need to support the

Re: [neonixie-l] Super easy wall adapter mod: 9V plus 170V at 80mA

ixie-l <neonixie-l@googlegroups.com> Subject: Re: [neonixie-l] Super easy wall adapter mod: 9V plus 170V at 80mA I was talking to Cincon and they might actually be able to either sell me unwelded units for modification or even make a custom unit.  How many people would be interested in a

Re: [neonixie-l] Super easy wall adapter mod: 9V plus 170V at 80mA

On 15-10-24 08:33 PM, croftj wrote: You may want to make it configurable or be willing to sell them so that we can make them what we want. I personally think a 90 - 100v version would be sweet! this sort of thing would fit a few niches. I am not sure if a little switcher would handle the

Re: [neonixie-l] Super easy wall adapter mod: 9V plus 170V at 80mA

These switchers can deliver the full output power from any combination of output loads so long as the feedback circuits are correct. The primary side controller would not know the difference since it stores the same energy in the transformer during the on time regardless of how it is output

Re: [neonixie-l] Super easy wall adapter mod: 9V plus 170V at 80mA

That's what I like about the Cincon TR(G)1509: The chose to not split the primary. The currently avaliable G version still did not split the primary and only added a Faraday sheild winding outside the magnetic circuit (Around the outside of the core) which is easy to deal with. Every other

Re: [neonixie-l] Super easy wall adapter mod: 9V plus 170V at 80mA

Can you supply them with the Swedish (European 2 pin version) plug too? I've tried to buy these since you started this thread but every reseller has told me these are obsolete, like it says in the link from Mouser here:

Re: [neonixie-l] Super easy wall adapter mod: 9V plus 170V at 80mA

I would be interested in the 9V plus 179V at 80 ma /DonS Sent from my iPad > On Oct 24, 2015, at 6:25 AM, Dekatron42 wrote: > > Can you supply them with the Swedish (European 2 pin version) plug too? > > I've tried to buy these since you started this thread but

Re: [neonixie-l] Super easy wall adapter mod: 9V plus 170V at 80mA

Currently I'm planning to terminate the 3 conductor cable with a 4 pin 1.25mm JST connector: 9V/Gnd/NC/HV. Jt -- You received this message because you are subscribed to the Google Groups "neonixie-l" group. To unsubscribe from this group and stop receiving emails from it, send an email to

Re: [neonixie-l] Super easy wall adapter mod: 9V plus 170V at 80mA

> How many people would be interested in an AC adapter that puts out 9V and > 170V at 15W total? These could also be done in a 9V/300V output version. While your existing supplies are very handy, an all-in one would be a nice solution too. How would it be terminated? Bare wires? TRS

Re: [neonixie-l] Super easy wall adapter mod: 9V plus 170V at 80mA

I would probably be interested in both, thanks. On Oct 23, 2015 7:42 PM, "taylorjpt" wrote: > I was talking to Cincon and they might actually be able to either sell me > unwelded units for modification or even make a custom unit. > > How many people would be interested in an

Re: [neonixie-l] Super easy wall adapter mod: 9V plus 170V at 80mA

I was talking to Cincon and they might actually be able to either sell me unwelded units for modification or even make a custom unit. How many people would be interested in an AC adapter that puts out 9V and 170V at 15W total? These could also be done in a 9V/300V output version. jt --

Re: [neonixie-l] Super easy wall adapter mod: 9V plus 170V at 80mA

Thanks, I should have spent more than 15 minutes on it! Here is an update, hopefully I didn't add more errors than I fixed. On Friday, October 16, 2015 at 4:06:55 PM UTC-7, A. Nonamus wrote: > > I think there's a small typo in Current Sink.pdf. At the end of the > description for the circuit

Re: [neonixie-l] Super easy wall adapter mod: 9V plus 170V at 80mA

Using the high voltage output as the regulated rail really works well! The low voltage output only varies by about 15% for a high voltage load from 0 to 75mA (The 170V was rock solid). A few more benefits from this implementation, and this mod in general: 1. No boost converter heating in

Re: [neonixie-l] Super easy wall adapter mod: 9V plus 170V at 80mA

I think there's a small typo in Current Sink.pdf. At the end of the description for the circuit on the left, "(Ir1 / 100) to satisfy Q1 hFE.", shouldn't that be Ir2? On Thursday, October 15, 2015 at 5:56:30 PM UTC-7, taylorjpt wrote: > > Current sinks are the easiest thing to build so long as

Re: [neonixie-l] Super easy wall adapter mod: 9V plus 170V at 80mA

Most nixie controller circuits don't use that much power, most of the power is used from the high voltage to light the displays. This modified wall adapter technique actually delivers more usable power for a given adapter power because the adapter efficieny is about 80% but if you take the low

Re: [neonixie-l] Super easy wall adapter mod: 9V plus 170V at 80mA

Have you tried the same process of rewinding the transformer on any of the small switching power supplies meant for driving LEDs, like the one shown in the picture below? The market is currently swamped with these power supplies and they are very cheap and modifying one or two in addition to

Re: [neonixie-l] Super easy wall adapter mod: 9V plus 170V at 80mA

I'd say it's dependent on : 1. How much core-area is available for the additional winding 2. How easy it is to remove & reinstall the bobbin 3. The total power of the supply If you're going to drive six IN-18's (the largest commonly-available nixie) at 150VDC, that's about 5 watts. Any power

Re: [neonixie-l] Super easy wall adapter mod: 9V plus 170V at 80mA

Are you willing to post a schematic of your current regulator driving multiple tubes? Thanks, Steve On Thu, Oct 15, 2015 at 3:34 PM, gregebert wrote: > If you drive your tubes with a current-regulator, there's really no need > to regulate the HV supply unless you are

Re: [neonixie-l] Super easy wall adapter mod: 9V plus 170V at 80mA

Would anyone like one of these modified units to play with? I am getting 300 meters of good 3 conductor high voltage cable and plan to terminate it with a 4 pin 1.25mm JST connector. These will be the high voltage regulated versions. -- You received this message because you are subscribed to

Re: [neonixie-l] Super easy wall adapter mod: 9V plus 170V at 80mA

If you drive your tubes with a current-regulator, there's really no need to regulate the HV supply unless you are trying to minimize the power. All you need is to ensure the voltage is high enough for ionization. I've used current-regulated cathode drivers on two of my clock designs. My

Re: [neonixie-l] Super easy wall adapter mod: 9V plus 170V at 80mA

You are better off using the highest main output voltage you can tolerate because of the relatively poor coupling of the low and high voltage windings that results in an error in the un-regulated output (In this case the 170V for instance): This error is manifested as a change in the high

Re: [neonixie-l] Super easy wall adapter mod: 9V plus 170V at 80mA

No sawing. You shove a flat blade screwdriver between the output cable strain relief and the cover and pry it up. This breaks the weld which you then work around until the lid pops off. Very little plastic deformation which then glues back together in a snap after the mod. Once thing... you

Re: [neonixie-l] Super easy wall adapter mod: 9V plus 170V at 80mA

I'm curious about adding windings to the transformer. Is this particular transformer constructed so you can pop-out the bobbin, or does it have those obnoxious interleaved E-cores that require you to split them all apart, recoat, etc ? Or worse yet, thread each turn thru the core ? -- You

Re: [neonixie-l] Super easy wall adapter mod: 9V plus 170V at 80mA

John, That's a clever hack! Once thing... you had to saw apart the ultrasonic weld to get it apart, right? Any good ideas on gluing it back together? Also, this is not strictly still UL recognized since you modified it, but it's close enough. Do you consider it to be as safe as the original

Re: [neonixie-l] Super easy wall adapter mod: 9V plus 170V at 80mA

High frequency switchers use ferrite EE cores. You cant really see it from the picture but the center posts are slightly shorter than the legs (About 0.015" total) and they are glued together with a drop of epoxy on the legs to hold them together. The reason that they gap core is to lower the

Re: [neonixie-l] Super easy wall adapter mod: 9V plus 170V at 80mA

All high frequency switching transformer cores are cast ferrite. No laminations to deal with. They are called E cores because they look like the letter E. John said that after he removed the transformer from the board, he separated the ferrite core halves by heating the glued joints with a

Re: [neonixie-l] Super easy wall adapter mod: 9V plus 170V at 80mA

Here's a closeup of the re-sealed housing with the re-fitted strain relief. -- You received this message because you are subscribed to the Google Groups "neonixie-l" group. To unsubscribe from this group and stop receiving emails from it, send an email to

Re: [neonixie-l] Super easy wall adapter mod: 9V plus 170V at 80mA

A more elegant method for adding the 3 conductor cable (Than that showed in my photo) is to take the original strain relief and pull out the wire and then drill it out. The new wire is then slipped into the strain relief. -- You received this message because you are subscribed to the Google

Re: [neonixie-l] Super easy wall adapter mod: 9V plus 170V at 80mA

I did the same process on an HDP24-1AWA01FZ (12V @ 2A) of which I have a couple hundred scrap units and am getting a clean 170V at 140mA. These units are welded better so I should find an easier way to open them. This is so much easier than the way I tried to do it years ago by trying to

Re: [neonixie-l] Super easy wall adapter mod: 9V plus 170V at 80mA

> This is so much easier than the way I tried to do it years ago by trying to > redesign the feedback circuits to make the switcher regulate the high voltage > directly: I still needed a low voltage rail to generate the logic bias for > the opto-coupled feedback circuits which meant adding a

[neonixie-l] Super easy wall adapter mod: 9V plus 170V at 80mA

Just for fun I modified a Cincon TR1509 wall adapter (9V at 1.4A rated) so that now it puts out the original 9V plus a regulated 170V at 75mA (13W total for both outputs). This requires re-winding the transformer and then adding 2 diodes and a capacitor. The original secondary is 2 x 15T of