Handy Dandy Little Circuits #6

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Switch Debouncer Circuits

Trying to trigger that 555 or that counter that you just finished and you find it's bouncing all over? Then you need a very light and fast finger or a switch conditioner (debouncer) circuit. You have a choice of three digital types below, the IC's are CMOS schmitt trigger with 5v trigger voltage.

You may not feel like using only one part of an IC , in this case you can use discrete components with transistors , they work almost as well .

DC to DC Converter

Two very usefull circuits , the coverted output will be two diodes voltage drop or 3 volts from the supply source .

Correction to Layout graphic of the positive to negative , the capacitor 100uF between D2 and ground should be reversed polarity