PWM LED Ramping Circuit (Slow Bright, Slow Fade) make LED light go bright slowly and with not sudden ON/OFF, as this circuit is good for signal, decoration and for soft light. Also, it uses 2× IC 555, LM393, 2N7000 MOSFET for smooth change and the circuit works best with 3 to 12V power with 6V […]
DIY Projects
Automatic Night Lamp Circuit with Photocell
Automatic night lamp use photocell to check light or dark; when dark the lamp is ON and when light the lamp goes OFF. This type of circuit is good for street, garden and security lights and also the parts used in circuits are LDR (ORP12), op-amp (uA741), relay which controls the AC lamp. Also, low […]
Transistors Based Megaphone Circuit
To begin with, this Transistors Based Megaphone Circuit uses transistor like amplifier, as it take weak sound from MIC and makes loud sound in speaker. People also use it in public talks, sports events and rallies wherever they need a loud voice; the circuit additionally uses two TIP32 transistors in a push-pull configuration to boost […]
Adjustable Thermostat Circuit using IC LM56
An electronic adjustable thermostat controls temperature in heating or cooling systems, as this adjustable thermostat circuit uses the low-power IC LM56 chip to switch between two temperature modes. First, it controls outside transistor for output load and then IC LM56 give reliable, precise temperature control. Moreover, it is good for many uses like check temperature […]
Simple 555 Timer Based Animal Repeller Circuit
Simple 555 Timer Based Animal Repeller Circuit is small device to keep animals away, it make high sound which animals do not like and humans mostly do not hear it; also its main part is IC 555 timer which make high frequency sound. Sound is around 15 kHz to 120 kHz (ultrasonic), therefore, this circuit […]
Mobile Incoming Call Detector Circuit
Mobile Incoming Call Detector Circuit is a smart project, which detect incoming call and make LED light up. Circuit is good for noisy places where ringtone is hard to hear and can catch RF signal from phone when call comes. In addition, the circuit uses LC circuit, transistor, 555 timer to turn ON LED and […]