On Fri, Oct 11, 2019 at 10:00 PM Dana Whitlow wrote:
>
> I once read that Supercapacitors come up short in handling really short
> spikes,
> and that this is not due to physical inductance arising from the
> structure. Rather,
> the issue was of a subtle (to me) electrochemical nature.
>
> Can
I once read that Supercapacitors come up short in handling really short
spikes,
and that this is not due to physical inductance arising from the
structure. Rather,
the issue was of a subtle (to me) electrochemical nature.
Can anyone either confirm or refute this? Inquiring minds want to know.
Hi
Indeed, the unit seems to work fine without batteries.
---
If filtering and short duration spikes are the concern, one could
replace the batteries with super capacitors. One would *hope* they
are a bit less likely to create problems. ……
-
While it is a good idea to keep OCXO’s on
The 105A was built without a battery. The 105B has a battery and charger.
I have a 105B that had the failed battery removed before I bought it. It
works fine. I have it on a UPS; it survived our just-finished NorCal power
shutdown just fine.
Jeremy
On Fri, Oct 11, 2019 at 7:01 AM Scott McGrath
As one who owns a 105 i had the battery properly rebuilt and basically have it
on low rate charge and periodically discharge the battery
When rebuilding a 105 battery it’s important to replicate its characteristics
Remember HP also intended I believe that the battery would also serve as a
I'd take Taka's suggestions regarding the actual battery and charger
characteristics. A gross over-current means something's wrong, but a
random fuse blowout after many years shouldn't be too surprising either,
presuming everything seems normal otherwise.
If it's not a battery/charger issue,
The fact that 25V supply is dropping to 23.4V shows it is drawing far more
current than it is rated. I am assuming this is a regulated power supply.
Does the power brick actually shuts down at 500mA or does it let the the
voltage drop and try to supply what it can? Maybe one or more Nicad
Hi
I would dump the batteries. If you need backup, run a UPS or some sort of
external DC setup. Batteries inside something like the 105 only seem to
lead to messy problems down the road.
Bob
> On Oct 10, 2019, at 2:10 PM, Roy Thistle wrote:
>
> Hi All:
> A 105B (quartz oscillator) is blowing
Hi All:
A 105B (quartz oscillator) is blowing the 1A fuse, after it is on about 1 hour.
The fuse appears to have just melted (not a black mark as the result of a
flash, in the case of a high current short.)… just looks like the fuse wire
(inside the glass capsule) melted into some little blobs,
