UK Vintage Radio Repair and Restoration Discussion Forum - View Single Post - The Ever-Ready experimental transistor TV set.

FERNSEH · 31st Mar 2020, 11:47 am

Hi Nick,
here is the circuit of the timebase panel, in fragmented form.
The synchronising of the line oscillator is implemented a simple comparator circuit employing two transistors. As it is now without any signal input the line oscillator is way off the correct frequency and it hoped that when the sync pulses are present the oscillator will operate at the correct line timebase frequency, 10.125Khz.

DFWB.

31st Mar 2020, 11:47 am	#7
FERNSEH Dekatron Join Date: Mar 2005 Location: Gateshead, Tyne and Wear, UK. Posts: 7,444	Re: The Ever-Ready experimental transistor TV set. Hi Nick, here is the circuit of the timebase panel, in fragmented form. The synchronising of the line oscillator is implemented a simple comparator circuit employing two transistors. As it is now without any signal input the line oscillator is way off the correct frequency and it hoped that when the sync pulses are present the oscillator will operate at the correct line timebase frequency, 10.125Khz. DFWB. Attached Thumbnails