Question -- Heathkit Ultrasonic Cleaner

[Neil Morrison]

OK. I just figured either that or a tad more feedback.

Neil

----- Original Message ----- 
From: "Ron" <ra.ah at RCN.COM>

> > I wonder if the driving circuit needs to be tuned to the resonator?
> 
> Possibly, but there is no provision to do it. Had this been a
> pressing problem, I would have measured the running frequency,
> to see how far was it from the specified 41KHz. If, indeed, there
> is a discrepancy, measurement of associated caps and coils would
> be in order. Another possibility is a lower than usual beta of
> the driving transistor.
> 
> However, as mentioned, I am quite happy with the unit as is.
> 
> -- Ron

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