The Simple Current Limiting Circuit using the LM317/LM338 controls the current flowing to the load and these ICs also work as current limiters when we configure them properly. Here, power comes in as Vin and LM317/LM338 have 3 pins: input, output and adjust. Vin goes to input pin ad output pin (Vout) goes to load […]
Air Flow Detection Circuit
Air Flow Detection Circuit means basic electric circuit to check if air is moving or not; also people use this in machines or home projects to watch air flow. Furthermore, in this project we make very simple circuit to see if air is moving and also we used broken AC bulb and few cheap parts […]
Simple Laser Diode Driver Circuit using IC LM317
One way to give steady current to laser diode is using a Simple Laser Diode Driver Circuit using IC LM317; as laser diode are very sensitive to current and with wrong current can damage it. Furthermore, LM317 usually gives voltage but here it gives constant current instead. Circuit Working: Parts List: Components Values Quantity Resistors […]
Light Detector Circuit using Wheatstone Bridge
An LDR changes its resistance when light falls on it and alight detector circuit uses this property in a Wheatstone bridge. One side of the bridge contains the LDR and a fixed resistor connected in series, while the other side contains a potentiometer and another fixed resistor connected in series. Furthermore, the circuit applies a […]
Frequency Divider Circuit
To begin with, a Frequency Divider Circuit take signal with high frequency and give signal with lower frequency, also it changes the signal in way to reduce frequency. Two common ICs used for this: IC 4017 Decade Counter: IC 555 Timer: Circuit Working: Parts List: Components Values Quantity Resistors (All resistors are 1/4 watt unless […]
Two-Way Intercom Circuit
This simple Two-Way Intercom Circuit let two places talk to each other like old home or office system; also main parts of this circuit are: Microphone: change voice to electric signal Audio amplifier (LM386): make mic signal strong Speaker: change strong signal back to sound SPDT switch: choose talk or listen mode Battery: give power […]