Push pull amplifier (CB21941E)

Using a pair of CK722s, this booster step of a few milliwatts of power was obtained in a 1960 Gernsback publication.

Alarm with NC sensors (CB25946E)
This circuit was found in the Radio Electronics magazine of May 1990. The supply voltage depends on...
Complementary Outputs VCO 4066 (CB19080E)
The CMOS 4046 integrated circuit is not very common today, consisting of a very efficient PLL for...
25 V x 100 mA Step-Up Regulator (CB24925E)
With a 10 V input this circuit provides a 25 V output. The circuit is from December 1985 Radio...