11-02-2018, 08:37 PM
there's Hi Trevor,
That an absolutely superb result. The BRC 1500 line flywheel discriminator is a neat circuit, no need for such things as a balanced discriminator which employs the complication of a phase splitter, be it a valve or centre tapped transformer winding.
Actually the 1500 line flywheel discriminator circuit was first used in the Invicta model 136 of 1957. The circuit of the Invicta 136 can be found in the 1957/58 R & T servicing book.
I'm considering adding a flywheel line sync circuit to the Marconi VT161. The metal chassis is pre-drilled to accept extra valves and in fact 625 line export versions of this special BRC chassis employed a flywheel line sync circuit.
Geordie McBoyne.
That an absolutely superb result. The BRC 1500 line flywheel discriminator is a neat circuit, no need for such things as a balanced discriminator which employs the complication of a phase splitter, be it a valve or centre tapped transformer winding.
Actually the 1500 line flywheel discriminator circuit was first used in the Invicta model 136 of 1957. The circuit of the Invicta 136 can be found in the 1957/58 R & T servicing book.
I'm considering adding a flywheel line sync circuit to the Marconi VT161. The metal chassis is pre-drilled to accept extra valves and in fact 625 line export versions of this special BRC chassis employed a flywheel line sync circuit.
Geordie McBoyne.
