Found in a 1960s documentation, this circuit uses an operational amplifier from the time and a current diode, both of which are difficult to find today.
With this circuit it is possible to adapt the input of a common analog multimeter, making it...
This simple circuit can make use of any general-purpose transistor. The power comes from the...
In this oscillator circuit using 3 TTL inverters we have all the conditions for the frequency...