In SX Microcontrollers, SX/B Compiler and SX-Key Tool, mrdieseldude wrote:

I hope the attached drawing is adequate. Also, a few additional comments:

 

1. The SX circuit does work with the variable voltage power supply. However, it only works from about 7V through 9V. I understand why it starts at 7, but I don't understand why is stops at 9. The regulator is rated up to 32 volts.

 

2. I told you previously that the circuit "does not run on the 12V power supply". Actually, it outputs 0 volts on the outputs (Rb 0 on the drawing) most of the time. I was testing it after reading your post yesterday, and on one occasion it actually went to 5 volts on Rb 0. Again, this only happens once the voltage supply (power supply) is increased above 9 volts. Seems like noice could be an issue, but then why would it only become a problem above 9 volts?

 

Thanks

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