It is a complex circuit and much can be replaced with simpler supplies.
Bad inverter simply change it out to something else...
But the reason its so complex is that it worked in very harsh environments
and generally on a battery backup system with a fairly wide range of
voltages. It would have had
Hi Richard,
may I ask you to send to me that Schematic?
thank you in advance
73
KJ6UHN Alex
On 4/24/2019 7:46 AM, RICHARD GOLDING via time-nuts wrote:
Many thanks to those who took the trouble to send me schematics of the Z3801a
PSU.
I'm pleased to report that, using, the schematic, I was a
Many thanks to those who took the trouble to send me schematics of the Z3801a
PSU.
I'm pleased to report that, using, the schematic, I was able to trace and fix
the fault and that GPS lock led is glowing again.
The problem was a faulty regulator IC (U2 LM317) that had decided to produce
1.8V ins
Hi Dave,
I would appreciate the Z3801A schematic too, if possible. I recall
looking for any schematics for this unit years ago, and found some info
about various aspects, but not a complete PS schematic. That would be
great if one exists now.
Ed
__
Well I thought I was sending it off group 8^)
Anyway my personal experience is that that schematic matched my 3801
pretty close
Dave
On 4/21/2019 9:19 PM, Artek Manuals wrote:
Richard
somebody (on this group?� .. five or more years ago?) reverse
engineered the DC to DC power supply/conve
Hi, can any one tell me where I can find the schematic for the Z3801a Power
supply board?
My Z8301a now refuses to start up. All the pico fuses are intact and there is
obvious signs of overheating/damge.
There is a connection between the power input +ve supply and both the DC/DC
converters but t
