Welcome Guest! Be sure you know and follow the Phorum Rules before posting. Thank you and Enjoy! (January 12) x

Thread Closed
Thread Rating:
  • 0 Vote(s) - 0 Average
  • 1
  • 2
  • 3
  • 4
  • 5

precise 713A power lab
#1

anyone have a decent schematic for a precise 713A power lab? the only one i could find was at

https://antiqueradios.com/forums//viewto...p?t=309831

it is useable, but barely.
#2

Was there any info found for this tester
Some one must have a good copy of this.
Thanks
Moe
#3

looks like radiomuseum has a schematic for download although it may only be the actual schematic not the other pages. It might be more readable. You have to fill in a bit of info to get the download but I've done it before, not hard.
#4

Thanks, I have those already.
Thought there might be something better out there.
A little less fussy
#5

Moe,
I see you discovered the "information" posted at https://antiqueradios.com/forums//viewto...p?t=309831. Non too clear in my estimation.
It has a variac [as you must know]. But with output voltages from 90AC to 140. Any idea why it wasn't designed to start at 0 volts?? Or if it can be modified to start at 0 volts.
Bob
#6

Sorry, Have not spent much time on this unit. Just too limited of info to continue.
Thanks for the interest.
Moe




Users browsing this thread: 1 Guest(s)
[-]
Recent Posts
B&K 1077B no video
Hello Tim, I would if it's a leaky Capacitor So are all 3 of those B- voltages low then ? Sincerely Richardradiorich — 01:55 AM
B&K 1077B no video
I found a schematic and think I have the problem traced down to the minus power supply. I have very low voltages that go...TV MAN — 12:41 AM
RCA 15X
I'd try replacing the bulb first and if that doesn't do it, then change the 35Z5 and see if the problem goes away.NostalgiaRadioTime — 12:28 AM
B&K 1077B no video
Hello Tim, I have that exact unit in my shop too plus a Sencore unit there are times I like one or other !!. Sincerely...radiorich — 11:07 PM
RCA 15X
Everthing goes at once, maybe it's the cold weather, I have had 2 dial strings break and no my little RCA is having dial...Paul Philco322 — 10:26 PM
Philco 91 Schematic
Hi Dan, I can't explain this specific resistor but I have seen the use of a switch to apply B+ voltage to screen gri...RodB — 09:36 PM
6TPZ and 5TPO Radio Help
I suspect it's been repaired before. And I suspect whoever repaired it, wanted to re-use old transistors' pin stubs in o...morzh — 09:24 PM
B&K 1077B no video
Thanks Rich! I'll take a look and see what he has. I know there's more modern equipment to be had, but this one I know a...TV MAN — 09:11 PM
B&K 1077B no video
Hello Tim, Here is a link to restoration of one on Phil's old radios site ! Sincerely Richard bk1077bradiorich — 09:01 PM
6TPZ and 5TPO Radio Help
I'm a little befuddled on this one. Should X5 and X4 be tied together like this?  It looks like someone added this at so...R3Sons — 07:33 PM

[-]
Who's Online
There are currently no members online.

>