10-10-2016, 04:19 PM
Hi.
I've put this in the vintage section as It is a good few years old now and there is nothing on the net nor can the chap from Garex help.
It's an old Ramsey Electronics item and it's duff. I loaned it out about 10 years ago and when I got it back both Transistors? were S/C.
I never bothered with it and it sat languishing in a drawer till a couple of weeks ago.
There was helpfully no marking on the transistors
The question is does anyone have a clue as to what the transistors are? There is a possibility T1 is grounded base but also could be a FET. I have reversed engineered the circuit, values are correct with the exception of the extreme right 100 ohm, There was a choke in its place and it had definately been replaced, the board clearly states R5.
Any help would be appreciated.
Cheers.
Trevor
MM0KJJ. Member of, RSGB, GQRP, WACRAL, K&LARC.
Trevor
MM0KJJ. Member of, RSGB, GQRP, WACRAL, K&LARC.