This Simple Shadow Detector Security Circuit is like one guard with very sharp eyes, which uses one light sensor like photodiode to look shadow in one place. If something stop the light and make shadow, then the circuit think someone is there and start an alarm; alarm can be loud sound, blinking light or something […]
Mini Projects
Simple Temperature Meter Circuit
Simple Temperature Meter Circuit is like small detective for heat, as it use special sensor like thermocouple or thermistor to feel heat near it. Here, the sensor can be small part or smart chip like LM35 or LM34 which change heat into electric signal; then circuit take this signal and confirms how much hot or […]
Simple Radiation Sensor Circuit
Simple Radiation Sensor Circuit is like small spy for rays which one cannot see, it can smell different radiation like from light bulb, electromagnetic, or X-ray (ionizing one) etc. Furthermore, this circuit have special sensor when radiation detects sensor feels it and send signal. The circuit then uses that signal to modify things such as […]
Simple USB Reading Lamp Circuit
Simple USB Reading Lamp Circuit is like small power house for ones book reading; as it helps to make small lamp easy to carry and it take power from USB port like from computer, laptop or power bank also. Also, this small lamp give light when one wants to read book or need more light […]
Simple UJT LED Flasher Circuit
Simple UJT LED Flasher Circuit is very simple way to make LED blink ON and OFF, as it uses special transistor name UJT which one work like small flasher switch. Here, UJT give pulse electric and make LED ON and OFF again and again with same time always; also this circuit is good for fun […]
Simple 1 Hz Pulse Frequency Generator Circuit
To begin with, a Simple 1 Hz Pulse Frequency Generator Circuit creates one pulse every second and engineers widely use this circuit in clocks, timers and signal generation applications. Circuit Working: Parts List: Components Values Quantity Resistors 10k 1/4 watt 1 220Ω 1/4 watt 1 Preset 100k 1 Capacitors Ceramic 10nF 1 Electrolytic 10µF 25V […]