Humidity is presence of water vapor in air or soil. Too much or too less humidity is harmful for plants and for storage. So we need a Simple Humidity Level Detector Circuit. This small circuit uses only few parts and gives LED indication when humidity crosses a level. It can be used to test soil […]
Refrigerator Door Open Alarm Circuit with IC 555
Sometimes, people forget to close the fridge door and this causes loss of cooling and waste of electricity. To solve this problem we can use a simple Refrigerator Door Open Alarm Circuit with IC 555 When the door stays open, the buzzer gives a sound, so it reminds the user to close the door This […]
Electronic Mosquito Swatter Bat Circuit
Electronic Mosquito Swatter Bat Circuit is very common device at home and work place. It uses small battery and simple circuit to make big voltage. This big voltage come on mesh net of a bat. When mosquito or fly touches the mesh the current pass through body and insect die quickly. Main idea is to […]
Auto On Off Light Circuit for Washroom
In washroom many time people forget to switch OFF the light because of this there is waste of electricity. To solve this problem we can make a Auto On Off Light Circuit for Washroom. When someone presses the switch it detects the presence and light will turn ON for some time and then get OFF […]
AM Radio Circuit using Transistors
This article show how make AM Radio Circuit using Transistors It use easy parts like transistor, capacitor, resistor and inductor. Parts are easy to find and good to learn basic radio frequency RF, catch signals and to make sound louder. Circuit catch medium wave AM signals and changes AM signal to sound and play sound […]
Low Cost AM Radio Receiver Circuit
This cheap and easy Low Cost AM Radio Receiver Circuit uses simple parts to make. It helps us get normal AM radio signals. It uses 2N3904 transistor and LM386 amplifier to find and make AM signals louder. Circuit is good for beginners and people who want to learn about radio and electronics. We can also […]