Question -- Heathkit Ultrasonic Cleaner

[Ron]

Neil Morrison wrote:
> ----- Original Message ----- 
> From: "Ron" <ra.ah at RCN.COM>
> 
> 
>>Rick,
>>
>>I've had a GD-1150 for years. It was always slow to start
> 
> ...
> 
> 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


> 
> Neil

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