switch relay

This supply can function as a battery eliminator for various devices, such as tape recorders, small radios, clocks, and more. A resistance is selected to provide a predetermined output voltage. In this circuit, various commonly used supply voltages produced...

In broadband networking and high-speed computing applications, multiple high-current, low-voltage power supplies are required to power FPGAs, flash memory, DSPs, and microprocessors. One example specifies a maximum current of 60A to power the CPU at 1.5V and up to...

A simple, high-efficiency switching power supply circuit can be designed using the LMZ13608 8A regulator. This regulator offers very high efficiency and requires few external components. It supports a wide input voltage range of 6 to 36 volts and...

A sensor activates transistor Q1 to turn on the low-frequency 555 oscillator, which generates pulses to control LAMP II. The sensor may respond to variations in light or temperature. Either resistor RA or RB can function as the sensor,...

Here are two examples of bistable flip flops which can be toggled between states with a single push button. When the button is pressed, the capacitor connected to the base of the conducting transistor will charge to a slightly...

This is a power-on time delay relay circuit that utilizes the emitter/base breakdown voltage of a standard bipolar transistor. The reverse-connected emitter/base junction of a 2N3904 transistor functions as an 8-volt zener diode, establishing a higher turn-on voltage for...