[Amps] Alpha 87A Power Supply Question
Jim Brown
jim at audiosystemsgroup.com
Thu May 6 14:53:54 EDT 2021
On 5/6/2021 6:56 AM, Steve London wrote:
> If I correctly understand what you are saying, this is exactly what the
> Alpha 76 and my old B&W PT-2500A have done. They have dual 120 volts
> primaries that they put in series for 240 operation. 120 volts for the
> blower is derived from one side of a 120 primary and the "center tap"
> between the two 120 volt primaries.
That is what K4XU did with his design for TenTec's first big amp, the
425 Titan, designed around 1978-9. It is a proper solution for running a
120V load from a 240V system.
73, Jim K9YC
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