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Turn an old PC into a multi-channel pulse generator, for PWM/servo/stepper
Leach amplifier
27Mhz and 49Mhz rf oscillator-transmitter
Temperature Sensor
200 watts amplifier using tda2030
getting started with sn 6675
Boost Switching Converter Design Equations
Logic Probes
AC Current Monitors
A potentially novel pre-amp for electret mic capsules which have their internal FETs Drain and Source connections available separately
Conference MIC
Robot shield for Arduino
FM by a timer ME555 circuit
Application of the constant current source circuit by the W7805