This circuit was found in a 1977 Radio Handbook. The MOSFET supports an equivalent. Capacitor C must be low leakage.
Found in Popular Electronics from the 90s, this circuit powers a warning lamp when the load is...
The four gates of a 40111 IC are used in thes two-out circuit. The output chages their state in a...
We found this circuit in a 1997 publication. It produces pulses of excitation whose intensity can...