This trigger produces an output pulse when zeroing the input signal. The circuit is from a documentation from the 70s, presenting a hysteresis of 100 mV.
March 2017 - Microchip's new 8-bit PIC16F15354 microcontrollers can now be obtained from Mouser...
This signal generator found in Japanese documentation of 1973 uses an unusual integrated circuit...
This circuit that converts very low currents into voltage was obtained in the 80's used component...