Fuel Gauge (CB26016E)

This automotive circuit was found in the June 1997 issue of Electronis now magazine. The circuit uses a common operational amplifier powered by 12 V.

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Low Pass Filter (CB5198E)
This circuit uses only passive components calculated for the desired frequency. We found it in an...
Pocket Signal Generator (CB13159E)
This unijunction relaxation oscillator can be used as a very useful signal injector. The circuit is...
Frequency divider with varicap (CB6826E)
Found in a 1965 Electronic Design, this circuit divides the frequency of a 50 MHz signal by 2. The...