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

ms660 · 22nd May 2016, 8:52 pm

The secondary winding in that schematic has a tap, only one end of the winding and the tap is shown connected to anything in that schematic, one end of that winding, the top end, connects to chassis, one of the external loudspeaker sockets and to one side of the loudspeakers voice coil via a hum cancelling coil.

The tap is connected to the other side of the loudspeakers voice coil and the other external loudspeaker socket.

The bottom end of the winding isn't connected to anything according to that schematic.

Lawrence.

22nd May 2016, 8:52 pm	#167
ms660 Dekatron Join Date: Apr 2011 Location: Cornwall, UK. Posts: 13,454	Re: HMV 653 Broadcaster all wave. The secondary winding in that schematic has a tap, only one end of the winding and the tap is shown connected to anything in that schematic, one end of that winding, the top end, connects to chassis, one of the external loudspeaker sockets and to one side of the loudspeakers voice coil via a hum cancelling coil. The tap is connected to the other side of the loudspeakers voice coil and the other external loudspeaker socket. The bottom end of the winding isn't connected to anything according to that schematic. Lawrence.