Hour counter AC & DC

Description:

When my brother built his EL84 amplifier he wanted to be able to count on/off operations and how long the amplifier had been running, and we came up with this clever on/off and hour counter in both an AC and a DC version based on a PIC16F628A and a seven segment LED display.

Picture gallery AC version:

Click on the picture to enlarge it and read our comments and advice

 

Projects files:

The electronic files

Picture gallery DC version:

Click on the picture to enlarge it and read our comments and advice

 

Projects files:

The electronic files

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