Time Base (CB25100E)

This time base circuit was found in the January 1988 issue of Radio Electronics magazine. The output signals are 1 Hz and 10 Hz TTL.

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Light Sensor Robot (CB17305E)
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Simple two-voltage power supply (CB23822E)
We found this circuit in Radio Electronics magazine from May 1962. The circuit uses rectifier...
Phase shift oscillator (CB21806E)
We found this circuit in Mullard's 1960s transistor manual. The circuit oscillates at 800 Hz, the...