Pulse generator with delay 555 (CB8922E)

We found this circuit in a Hands On Electronics from the 90s. The delay is given by the formulas next to the diagram.

Preamplifier for Piezoelectric Microphone (MSB066E)
This circuit uses a FET and a BJT to give a x300 gain for the input signal. So a 50 mV signal at...
One Transistor Alarm (CB914E)
This one-transistor alarm can be used with much more sensors than the two shown by the figure....
FSMIJ Illuminated Tactiles Switches
June 2017 - The new TE Connectivity FSJMI series of illuminated tactiles switches is now available in Mouser...