Re: [time-nuts] potential low-RFI power supply

Taka, You can set up a mini conducted-EMC lab with a few additional items that can be purchased, and some that you can make yourself, if you have the right parts. The most important item is a wideband AC current probe or transformer. A commercial clip-on type is most convenient, and ideally

Re: [time-nuts] potential low-RFI power supply

Message: 1 Date: Sun, 17 May 2020 12:53:42 -0600 From: Eric Scace To: Time Nuts email list Subject: [time-nuts] potential low-RFI power supply Message-ID: Content-Type: text/plain;    charset=utf-8 Pro Audio Engineering announced a sale (through Friday) on its nominal 14 Vdc 4A switching supply

Re: [time-nuts] potential low-RFI power supply

: > On Mon, 18 May 2020 12:00:02 -0400, time-nuts-requ...@lists.febo.com > wrote: > Re: time-nuts Digest, Vol 190, Issue 30 > >> Message: 1 >> Date: Sun, 17 May 2020 12:53:42 -0600 >> From: Eric Scace >> To: Time Nuts email list >> Subject: [time-nuts] po

Re: [time-nuts] potential low-RFI power supply

On 5/18/20 10:19 AM, Joseph Gwinn wrote: On Mon, 18 May 2020 12:00:02 -0400, time-nuts-requ...@lists.febo.com wrote: Re: time-nuts Digest, Vol 190, Issue 30 Message: 1 Date: Sun, 17 May 2020 12:53:42 -0600 From: Eric Scace To: Time Nuts email list Subject: [time-nuts] potential low-RFI power

Re: [time-nuts] potential low-RFI power supply

c Scace >> To: Time Nuts email list >> Subject: [time-nuts] potential low-RFI power supply >> Message-ID: >> Content-Type: text/plain;charset=utf-8 >> >> Pro Audio Engineering announced a sale (through Friday) on its >> nominal 14 Vdc 4A switching

Re: [time-nuts] potential low-RFI power supply

On Mon, 18 May 2020 12:00:02 -0400, time-nuts-requ...@lists.febo.com wrote: Re: time-nuts Digest, Vol 190, Issue 30 > Message: 1 > Date: Sun, 17 May 2020 12:53:42 -0600 > From: Eric Scace > To: Time Nuts email list > Subject: [time-nuts] potential low-RFI power supply > Mess

Re: [time-nuts] potential low-RFI power supply

Trying to look at the junk on the output voltage won't tell the story you need. Just connect a scope (1 meg) input to the DC output ground, and you'll begin to see the common-mode current situation. The actual LF and HF ripple on the DC out can be dealt with by sufficient filtering or

Re: [time-nuts] potential low-RFI power supply

IIRC the HP3561A goes to 100 kHz. It's a well-built FFT analyzer at heart. Dana On Sun, May 17, 2020 at 4:12 PM Taka Kamiya via time-nuts < time-nuts@lists.febo.com> wrote: > I have an HP audio FFT that starts from sub 1Hz so I can do that when I > get mine. What kind of load shall I use for

Re: [time-nuts] potential low-RFI power supply

I have an HP audio FFT that starts from sub 1Hz so I can do that when I get mine.  What kind of load shall I use for this?  Purely resistive load?  What kind of power?  Near 100%, 50% or??  I don't know off the top of head what the available RBW is.  It's HP3561A

Re: [time-nuts] potential low-RFI power supply

On 5/17/20 11:53 AM, Eric Scace wrote: Pro Audio Engineering announced a sale (through Friday) on its nominal 14 Vdc 4A switching supply . The test results

Re: [time-nuts] potential low-RFI power supply

Looks promising!  I went ahead and purchased a piece.  With new switching supply COMPONENTS targeting audio market from various chip manufacturers, it is indeed a hopeful and promising development.  Now I'm wishing someone to make a piece one order of noise level less for "time-nuts"

[time-nuts] potential low-RFI power supply

Pro Audio Engineering announced a sale (through Friday) on its nominal 14 Vdc 4A switching supply . The test results webpage compares noise on the DC output