![1458b.png 1458b.png](https://www.electro-tech-online.com/data/attachments/48/48470-1c97735aa69fa0389b901474e9abb3e4.jpg)
Thanks for looking!
ok...so here's the theory. I set up a 1458 dual op amp with three voltage dividers, r1+r2, r3+r4 and the variable resistors to the inputs of the op amp. simple rite? this gave me an out put of just over 2 volts low on each output and a high of just over 8 volts. so I put a 5 volt zenier diode on each biased towards the outputs. the idea is to give a low of zero and a high of around 3 volts. From this point I can either build an H bridge to run a small motor or use a darlington pair to trigger dpdt relays and run a big one from a separate power source. I'm stumbling along the way but this is a start. are the diodes a bad idea?
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