UK Vintage Radio Repair and Restoration Discussion Forum - View Single Post - PYE TT1

FERNSEH · 6th Jan 2016, 7:17 pm

Ten volts from the bench power supply has been connected to the line oscillator and driver stage. The line oscillator circuit is working at 10Kc/s. The correct 15 volts P- P waveform is present at the collector of the line driver transistor V34, a Mullard OC23.
Without the line output stage the current drawn by this receiver is a very modest 0.5amp @ 10volts.
The circuit diagram was posted up #7 by Valveman.

DFWB.

6th Jan 2016, 7:17 pm	#20
FERNSEH Dekatron Join Date: Mar 2005 Location: Gateshead, Tyne and Wear, UK. Posts: 7,444	Re: PYE TT1 - First Transistor Portable UK TV Ten volts from the bench power supply has been connected to the line oscillator and driver stage. The line oscillator circuit is working at 10Kc/s. The correct 15 volts P- P waveform is present at the collector of the line driver transistor V34, a Mullard OC23. Without the line output stage the current drawn by this receiver is a very modest 0.5amp @ 10volts. The circuit diagram was posted up #7 by Valveman. DFWB.