This Simple Electronic Stethoscope Circuit talks about how to make one type of stethoscope circuit. Normal stethoscope uses tube to listen small sound from body like heart and lung. This electronic stethoscope uses small electric parts to make sound more clear and loud. It help doctors and nurses hear better what happen inside the body. […]
Acupuncture Point Locator Circuit
Acupuncture Point Locator Circuit is small device which helps to find special point on human body. In acupuncture thin needle goes inside our body part to reduce pain. This is old medical method. These special body points called acupuncture point or just acupoints. People think energy move through body using these points. To find these […]
Coffee Temperature Indicator Circuit
Ever burnt your tongue because of coffee too hot? This Coffee Temperature Indicator Circuit show how to make small circuit and which tells how hot coffee is! It uses sensor to check temperature and then LED light up to say if coffee is good to drink or not. So now we can enjoy coffee always […]
Simple RF Field Strength Meter Circuit
This Simple RF Field Strength Meter Circuit show how to make device to measure radio wave! Radio and mobile phone both use radio wave and this signal we cannot see. This thing are helpful for radio fans, engineers and new people. They can check how strong signal is in different area. They also can use […]
AVC Automatic Volume Control Circuit
This AVC Automatic Volume Control Circuit work like auto volume knob. It hears the sound coming like music or talking and then change volume by itself. If music is played low then it makes little louder. If music is very loud then makes it little quiet. This helps because there is no need to change […]
Slow Start, Fade Lamp Dimmer Circuit
This article for Slow Start, Fade Lamp Dimmer Circuit show how to make light dimmer switch. Light becomes slowly bright when turn ON and goes slowly dark when turn OFF. This type of circuit looks very nice for bedroom or living room. Circuit Working: Parts List: Category Description Quantity Resistors (All resistors are 1/4 watt […]