We found this circuit in a 1965 Electronic Design. Transistors are still common but admit equivalents for some of them. The circuit drains a current of only 4 mA.
This circuit trips when the input voltage exceeds 30 V. Its base is a DIAC and it can be used to...
MXT1665T-A Family from Microchip Brings the User Experience of Multi-Touch HMI into the VehicleCHANDLER,...
This circuit uses a 555 (according to the diagram) to generate 50 ms tone bursts at a frequency of 1.5...