Re: 1502 TDR project - using bench supply

Greg Muir


PS - I never have tried any of the passive component ":cheat" methods to trick the TDR into thinking it has a battery attached. The bench supply method works every time.

You also may be aware that there have been others who have come up with minor modifications to the TDR power supply circuitry itself to bypass the "battery present" detect circuit so that you don't need to have any connection to the battery compartment contacts whatsoever when operating the units off of 120V.


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