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RE: Is this feasible? Rectifying 6.3v for heaters




Hi Pete,

This is the protection circuit. Basically it is a low pass filter, full wave rectifier, and comparator. With excessive low frequency content the relay opens removing the input to the amp. It did solve the fuse blowing issue but it was still annoying. After regulating the Citation 4 supplies the protection rarely got invoked.

I suppose a sensible person would have simply moved the 3.2 Hz zero at the input of the subwoofer amp to ~ 15 Hz, but a lunatic with a 30" woofer would not hear of that.

Phil

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  • RE: Is this feasible? Rectifying 6.3v for heaters - coffee-phil 14:48:33 12/21/17 (0)
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