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one transistor amplifier help

Nah, that can go up and down. An electrical analogy to a ratchet and pawl is a diode charge pump.

Cheers

Phil Hobbs

--
Dr Philip C D Hobbs 
Principal Consultant 
ElectroOptical Innovations LLC 
Optics, Electro-optics, Photonics, Analog Electronics 

160 North State Road #203 
Briarcliff Manor NY 10510 

hobbs at electrooptical dot net 
http://electrooptical.net
Reply to
Phil Hobbs
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OK I was thinking of a stepper motor. (Or maybe an up/down counter.)

George H.

Reply to
George Herold

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