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Posts tagged light sensor

Light sensor circuit diagrams

Light sensor circuit diagrams Light sensor circuit diagrams This circuit has two distinct functions, either using the same light sensor, a circuit module is useful for light and turn off the lights (relay), and that only produce sound. Usually applies to a security alarm place. Components used: Sensor LDR 2N3904 Relay Audio alarm using LM386

How to tell if cdi is bad – Circuit Module CDI ignition scooter

How to tell if cdi is bad – Circuit Module CDI ignition scooter ? CDI Pinout circuit module 1.Input from trigger pickup Module 2.To ignition Coil Positive 3.Nothing / open 4.Ground 5.Kill switch 6.CDI Power How to tell if cdi is bad? What happens when a cdi box goes bad ? Coil is a function, […]

Simple RF Signal Strength Meter

Simple RF Signal Strength Meter RF Signal Meter circuit diagram Signal Level Meter, Satellite Meter QAM & DVB Analyzer using 2N3819, 2N229  

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