ATV repeater controllers

This DTMF controller, based on the PIC16F84A microcontroller, is straightforward and cost-effective to construct. It provides practical experience in utilizing and programming PIC microcontrollers. The controller measures 10 cm x 6 cm and can be housed within a repeater...

This amplifier is designed for applications requiring a peak-envelope-power (PEP) signal in the range of 10 to 15 watts, specifically within the 420 to 520 MHz frequency range. Components CI, C2, and LI create a matching network for amplifier...

The SP6691 circuit is designed to provide a high output voltage using a lower voltage boost regulator by incorporating a charge pump circuit. This configuration can convert a standard 30V boost regulator into a 60V boost regulator if necessary....

Using a switch to power up your microcontroller projects may not be a good idea if you need to "wake" the PIC during some events. For example: A metal detector sends a pulse indicating a car is ready to...

If a page name is not selected by pressing the button, the previously selected page name continues to be used. The value is stored in EEPROM and may be changed at any time. When the unit is first powered...

The signal emitted by an IR remote control contains two parts, the control pulses and a modulated carrier wave. The control pulses are used to modulate the carrier, a popular modulation frequency being 36 and 42KHz. The signal is...