Hughes suggests this circuit in a 1968 documentation. The circuit uses old transistors that can be replaced with equivalents. MOSFET is the critical component of the circuit.
This circuit split the voltage of a Power supply allowing it to be used as dual supply. The limit...
In the figure we have a simple timer with two voltage comparators of the four of an LM339. The...
This circuit allows coupling optical signals to a TTL input with excellent performance. Among the...