High current buffer (CB7280E)

Suggested by Popular Electronics, it is a digital amplifier, for pulses with frequencies up to a few megahertz.

Light control (CB22123E)
This circuit is found in documentation from the 1990s. The load can be a relay and the sensor, an LDR of...
4093 Oscillator (MSB0125E)
This oscillator can run in frequencies up 10 MHz depending on the Power supply voltage. The 1 µF...
Pulsating audible LED (CB20946E)
This circuit was found in an old Popular Electronics. It causes an LED to pulse and, at the same...