Liquid Sensing Circuits

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Car Lights Monitor
Windshield Wiper Interval Controller
Undervoltage Detector
Buffer Lc Data And Clock Lines Circuit
Basic Oscillator (Tone Generator) At 1.8 KHz -alarm circuits
USB to RS232 Using Atmel ATtiny2313 or ATmega8
sound Circuits
momentary switch teamed with
Lighting designs with flicker-free LED dimming
Power Supply for the SSY-1 YAG Laser
The oscillator with electronic tuning of frequency
2450MHz end-stage linear power amplifier configuration of the circuit diagram RF2126