Hello gentlemen i am in need of the low voltage supply transformer 6.3v ac @ 2.8 amps ..and i think it also supply's the screen voltages as well...Can anyone here give me the exact specs of this part so i can try to locate a replacement...RF parts does not list any..Or someone that could rewind this one..Thanks in Advance
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Pride DX 300 T~2
- Thread starter n4dxx
- Start date
Check out this site... they produce a lot of classic RF amp and radio related transformers. Good stuff: http://hammondmfg.com/5cindex.htm
Maybe the 166M6 would work for you? 6.3V @ 3 amps
http://hammondmfg.com/166.htm
Here is their master list for RF amp iron:
http://www.pwdahl.com/PWD_HamCatalog.html#10
Order me one of these for a back up
thanks...
HENRY 3K-CLASSIC X-1 PLATE
PLATE XFMR FOR EXPORT MODEL W/HI/LO PRI
CORE) A-0525/ C-CORE STYLE #) 10 HIPERSIL C-CORE
PR) 230 VAC 60 HZ HI LO-TAP
S1) 4000/3000 VAC @ 1.5A ICAS
DM) HT = 10.769 WT = 9.825 DT = 9.188 MD = 5.000 MW = 6.437
PRICE) CALL or e-mail Plus S&H FOB Buffalo, NY WEIGHT) 86 LBS
Maybe the 166M6 would work for you? 6.3V @ 3 amps
http://hammondmfg.com/166.htm
Here is their master list for RF amp iron:
http://www.pwdahl.com/PWD_HamCatalog.html#10
Order me one of these for a back up
thanks...HENRY 3K-CLASSIC X-1 PLATE
PLATE XFMR FOR EXPORT MODEL W/HI/LO PRI
CORE) A-0525/ C-CORE STYLE #) 10 HIPERSIL C-CORE
PR) 230 VAC 60 HZ HI LO-TAP
S1) 4000/3000 VAC @ 1.5A ICAS
DM) HT = 10.769 WT = 9.825 DT = 9.188 MD = 5.000 MW = 6.437
PRICE) CALL or e-mail Plus S&H FOB Buffalo, NY WEIGHT) 86 LBS
Last edited:
Yeah, that one's a problem. We tried a toroid transformer from Antek, type AS05T240.
The heater winding is 6 Volts, not 6.3. You loose a bit of the hot-rod wattage from the Pride, but you'll improve the tube life.
The 240-Volt winding feeds only one side of the original bridge-rectifier circuit, turning it into a full-wave doubler. Boosting the size of filter caps C33 and 34 from 40uf to 100 or 150uf prevents ripple problems from doing this.
Mounting the thing is a pain. This is the cheap-but-lots-of-trouble solution.
We adopted a policy of mounting a 1-Amp circuit breaker on the rear panel next to the fuse holder. Serves to protect T2. The original setup didn't include any separate protection for it. By the time the stock 10-Amp fuse blows, T2 will have all the magic smoke let out of it permanently.
Hammond has one that's close, but a bit larger. Type 260E. Mouser used to have it. That one costs twice or more the Antek toroid, but will be a bit less trouble.
Just be sure to include some primary protection once it's replaced.
73
The heater winding is 6 Volts, not 6.3. You loose a bit of the hot-rod wattage from the Pride, but you'll improve the tube life.
The 240-Volt winding feeds only one side of the original bridge-rectifier circuit, turning it into a full-wave doubler. Boosting the size of filter caps C33 and 34 from 40uf to 100 or 150uf prevents ripple problems from doing this.
Mounting the thing is a pain. This is the cheap-but-lots-of-trouble solution.
We adopted a policy of mounting a 1-Amp circuit breaker on the rear panel next to the fuse holder. Serves to protect T2. The original setup didn't include any separate protection for it. By the time the stock 10-Amp fuse blows, T2 will have all the magic smoke let out of it permanently.
Hammond has one that's close, but a bit larger. Type 260E. Mouser used to have it. That one costs twice or more the Antek toroid, but will be a bit less trouble.
Just be sure to include some primary protection once it's replaced.
73