Tanker135E
New Member
Hi As this is my first post I might not get the attachment loaded so be easy on me. Little background on me and the circuit. I am a Model Railroader and use different circuits that others have made and I employ. My electronics knowledge is minimal. That is I understand somethings but mostly don't know why they work. I am a smart guy but needs to be told more than once. The circuit I am trying to recreate (make smaller) is what I have come to learn is a amp/booster, they who build it called it an H-bridge.(1994) What it does for me is, it fits between a throttle/decoder and protects it from thermal overload/over amperage. I am working with a fairly old command control system that is mostly an analog.(Keller Onboard 1979) Just in case I can't load the image I'll tell you about the circuit. It receives power (14v) thru the BR and then to 4 transistors 2 NPN,2 PNP there are 2 1K 1/4w resistors. the throttle sends its signal via Brn Org wires then this circuit sends the signal to the motor (engine) this little booster takes all the heat there by saving the no longer made throttle. I just thing it can be made smaller and easier since we are 15 years further advanced? Ok when I try to upload it says I am missing a security token? steve Try this link and you can view the schematic
https://i44.tinypic.com/2iux5lc.jpg
https://i44.tinypic.com/2iux5lc.jpg
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