4046 Wide-Band VCO (CB25754E)

Found in the August 1994 issue of Electronics Now, this CMOS circuit uses the 4046, which is uncommon today.

Zener and SCR Oscillator (CB22095E)
This interesting oscillator was obtained from an old documentation. In principle any 106 series SCR...
Fourth Order Low Pass Filter (CB14925E)
This filter, with a cut-off frequency of approximately 1 kHz, has a high Q and employs two...
Current Controlled Oscillator (CB23635E)
This circuit is from a Radio Electronics from February 1964. The circuit uses period transistors and is...