High current buffer (CB7280E)

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

Power on reset (CB7176E)
These reset circuits when the power is turned on were found in an 80's EDN. The circuit also...
Cascading the 4027 (CB152)
A divide-by-4 or two-bit binary counter can also be built using two flip-flops of the 4027 type as...
Alarm with NC sensors (CB25946E)
This circuit was found in the Radio Electronics magazine of May 1990. The supply voltage depends on...