This circuit controls 6 LEDs in two sets with the phase change cycles controlled by a 555 oscillator. The circuit can be powered by voltages between 6 and 12 V.
This amplifier with two transistors for analog instruments was found in a Raytheon publication from the...
This circuit, which in our times would be called a shield, can also be used with other loads. The...
This amplifier, suggested by National Semiconductor, is characterized by its very high input...