This current switch was found in a Radio Electronics from November 1957. It triggers the current determined by the electromechanical sensor, a polarized relay of the time.
This circuit is from a Hands-On Electronics from the 90s. The integrated amplifiers used are well...
In the figure we have an amplifier from the 50s using the CK721. The circuit has a voltage gain of 5...
MXT1665T-A Family from Microchip Brings the User Experience of Multi-Touch HMI into the VehicleCHANDLER,...