Two-input amplifier (CB21661E)

The critical component of this 1967 amplifier is the driver transformer. The circuit has both high and low impedance input.

Digital Traffic Light (CB10761E)
The circuit presented was taken from an old English publication in 1981 but it can be easily...
CMOS Oscillator with 4001 or4011 (CB13143E)
The maximum frequency of the oscillator shown in figure 10 is on the order of 5 MHz, depending on the...
Bench Audio Amplifier (CB18061E)
The circuit presented, from a 2005 documentation, can provide from 1 W to 2.5 W of output when...