Posts: 1,114
Threads: 14
Joined: Feb 2013
City: Irvington, NY
Quote:Can you explain, please? Since I am going to have to put together a parts order (TR701 and 702, as well as the electrolytics in the circuit as well as parts for another upcoming receiver), I might as well go ahead and buy these protection diodes at the same time.
All you need is some 1N4007 rectifier diodes placed in reverse parallel and connected across the input wire from the knob to ground. Something like this from another posting here where the diodes were recommended to protect a VTVM meter movement.
[Image: http://philcoradio.com/phorum/attachment.php?aid=11799]
Wait on installing the diodes until you get the circuit working properly first, as they may reduce the sensitivity somewhat and it would be good to compare with the diodes in and out of the circuit.
Messages In This Thread
RE: Realistic STA-225 - by Mondial - 12-30-2016, 12:10 AM
Users browsing this thread: 1 Guest(s)
|
|
Recent Posts
|
|
54C Complete Teardown/Rebuild
|
| Hello Roy,
here is this one
sincerely Richardradiorich — 12:45 AM |
|
54C Complete Teardown/Rebuild
|
| Richard,
Had grabbed it already but thank you just the same. I find myself wanting to find some way to block out the...glyphmon — 12:03 AM |
|
54C Complete Teardown/Rebuild
|
| Hello roy,
here is a link to the schematic .
Sincerely Richardradiorich — 11:54 PM |
|
54C Complete Teardown/Rebuild
|
| Richard,
The Silvertone 2014 also is a transformerless set, so I am incorporating a 1:1 600 ohm audio isolation transfo...glyphmon — 11:37 PM |
|
Preliminary work on wife's Silvertone 2014
|
| Did an alignment today which was interesting. IF alignment went great, almost all was already spot-on. Adjusting on th...glyphmon — 11:35 PM |
|
54C Complete Teardown/Rebuild
|
| The main problem with adding a Bluetooth input is that this set lacks a traditional power transformer to isolate it from...radiorich — 11:19 PM |
|
54C Cabinet Refinish
|
|
I started stripping this cabinet before it got super chilly out because I knew I wasn't going to be able to work on ...glyphmon — 11:18 PM |
|
54C Complete Teardown/Rebuild
|
| While I'm waiting to wrap up the final steps on my wife's Silvertone 2014, I started disassembly on the next project. O...glyphmon — 11:07 PM |
|
Preliminary work on wife's Silvertone 2014
|
| Hello roy,
that great news glad it worked out for you !!
Sincerely Richardradiorich — 10:50 PM |
|
Preliminary work on wife's Silvertone 2014
|
| Safety caps arrived today. Soldered one in and had a successful first power-up. No magic smoke escaped and it tunes in...glyphmon — 09:53 PM |
|
Who's Online
|
| There are currently no members online. |
|
 
|
![[-]](https://philcoradio.com/phorum/images/bootbb/collapse.png "[-]")
