This circuit was obtained in an Electronics World of 1968. The operational amplifiers ones are types of the time, no longer used today. The circuit responds from less than 20 Hz.
This is a very simple atomic radiation detector circuit using a Geiger-Muller tube. The circuit was...
With a 120 ohms resistor this circuit can also be used as a shield for 3.3 V output voltages. The...
This is one of the many universal motor controls that the reader can find on this website. The...