Microcontroller Programmer Circuits

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100W Guitar Amplifier
Instrument preamp
On-off Infrared Remote Control
PLL Oscillator for Medium Wave Application
Switching Supply In Telephone Ring Generator
inverter 12v dc to 240v dc circuit
IR Remote Control Receiver
MFOS Micro-Sample & Hold circuit
Debounced Counter Made From Off-The-Shelf Chips
74S124 High Frequency VCO with Varactor