This circuit was found in a Popular Electronics of the 1990s. The sensor is a rotating mechanical system with a propeller-driven magnet to count pulses with a reedswitch.
In the figure we give a simple divisor by 2. The complementary output (Q /) is connected to input...
This circuit has appeared on our site several times as a battery status monitor. In this...
This circuit was found in a 1967 General Electric documentation. The components are from that...