4X3 Keypad Interface Circuit

In its simplest form, a voice-over unit is just a microphone and change-over switch feeding an amplifier, the output from the microphone having priority over the amplifiers audio signal when the "push-to-talk" switch is pressed. In this circuit, a...

This micropower multifunction power management integrated circuit (PMIC) is designed using the LTC3554, manufactured by Linear Technology Corporation. It serves as a solution for portable Li-Ion Polymer battery-based applications. The LTC3554 integrates a USB-compatible linear PowerPath manager, a standalone...

Circle i represents a two-phase grid connection line for an AC technology turbine shed, which consists of two lines. A voltage is generated between Ri through a Buck converter, with components R1 and R3 dividing the output. The sampled...

Collecting and storing experimental data presents a common challenge for hobbyists. A widely used method involves utilizing a device that converts analog data into digital format and stores the information on a computer. These devices are known as A/D...

Using a wire connection, utilize the NFA.55 timebase circuit delay type light touch switch, which can directly replace an ordinary mechanical switch without needing to modify the original internal wiring. The circuit is powered back with good hoof Chapter...

The circuit generates precision triangle and square waves. The output amplitude of the square wave is determined by the output swing of operational amplifier A1, while the ratio of resistors R1 to R2 sets the amplitude of the triangle...