The Fisher 700-T Receiver
Posts: 1,114
Threads: 14
Joined: Feb 2013
City: Irvington, NY
Ron, I found the schematic of the 700-T and looks like the output stage supply rail is + 65V. That's a bit high for the 2N3055, but ON semiconductor makes a higher voltage version as the MJ15015G. Its rated for a Vce of 120V which leaves plenty of safety margin.
http://www.onsemi.com/pub_link/Collateral/2N3055A-D.PDF
Its a versatile NPN silicon output, and can replace any similar style transistor in a vintage receiver or amp. There is also a matching PNP complement available.
Mouser has them in stock at $2.85 in single unit quantity, or $2.30 in lots of 10. If you are considering doing more amp repairs, you might consider getting a bunch of these to have on hand.
Messages In This Thread
RE: The Fisher 700-T Receiver - by Mondial - 04-04-2014, 04:15 PM
Users browsing this thread: 6 Guest(s)
|
|
Recent Posts
|
|
trying to identify this wire type
|
| The red wire is rubber covered wire.
The others are cotton braid over rubber often in colors or a tracer, also strand...Chas — 02:43 PM |
|
trying to identify this wire type
|
| Greetings Phorum members,
Hope you can help me identify this type of wire in the photo I have attached. I am not sure ...georgetownjohn — 01:53 PM |
|
Philco 60 Squealing
|
| All correct shields must be in place, all tubes correct no subs of any kind.
Check any soldered, riveted ground conne...Chas — 01:24 PM |
|
Philco 60 Squealing
|
| I have recapped and replaced out of tolerance resistors and so on. Radio plays nicely on fairly strong stations. The pro...dconant — 10:55 AM |
|
Philco 46-420 Code 121 Reception issues
|
| Welcome Eric,
I agree with Bob and far as the two main electrolytic filter capacitors did you change them yourself or w...radiorich — 11:43 PM |
|
Philco 46-420 Code 121 Reception issues
|
| You mentioned the Philco manual and going through the check points...just to be sure we're on the same page here's the m...klondike98 — 08:13 PM |
|
Philco 42-1008 conversion kit
|
| Interesting. I haven't seen that before.klondike98 — 07:02 PM |
|
12' Philco
|
| Yes I had looked for it on the web as well some time back and could not find it. I was glad to see it turned up in Ron'...klondike98 — 06:59 PM |
|
Shadow Meter Bulb
|
| Now if you had a set with a tuning light then the bulb type is important to the circuit, some sets used those prior to t...Arran — 04:58 PM |
|
Shadow Meter Bulb
|
| Ok. Thanks for the correction.RossH — 03:09 PM |
|
Who's Online
|
There are currently 3909 online users. [Complete List]
» 2 Member(s) | 3907 Guest(s)
|
|
|
|
 
|
![[-]](https://philcoradio.com/phorum/images/bootbb/collapse.png "[-]")
