This circuit is used to control a Arduino Based 55W Halogen Light Controller Circuit. Arduino gives low voltage signal and MOSFET handles high voltage and high current. This circuit is useful for dimming, ON/OFF control and automation projects. Arduino Coding: Code Explanation: Circuit Working: Parts List: Component Name Value Quantity Resistor 1k 1/4 watt 1 […]
Soft ON Circuit for 12V Halogen Lamp
In this post halogen lamp draws very high current at switch ON. Cold filament resistance is very low and this causes sudden inrush current. Lamp life becomes short with this circuit protects lamp and it also protects outside fuse and switch indirectly. Soft ON Circuit for 12V Halogen Lamp reduces this problem. Lamp voltage rises […]
Simple Transistor Based Touch Switch Circuit
This article is about is a Simple Transistor Based Touch Switch Circuit. It works when finger touches the pad with no push button used. Human body gives small signal and circuit senses this signal. Two NPN transistors are used and one LED is used as output. Circuit works with only 3V supply which is very […]
Arduino Touch Sensor Relay Circuit
Want to control appliances by touch? then this circuit makes it possible. This Arduino Touch Sensor Relay Circuit uses Arduino and touch sensor. Arduino reads touch signal and relay works like toggle switch. Touch sensor is touched once and relay turns ON. If we touch again then relay turns OFF, each touch changes relay state. […]
Op Amp 741 Sound Generator Circuit
Here is the tutorial for small circuit with big sound. This Op Amp 741 Sound Generator Circuit creates stable tone for hobby projects. The Op amp works like mini sound machine with no complex parts and with no hard wiring. Just connect parts and enjoy instant sound in just few minutes. This circuit is good […]
Audio Sound Generator Circuit using IC 555
Want a simple sound maker? then make noise with this electronic circuit. This small circuit makes loud beep sound from speaker using only one 555 timer. The circuit turns 9V battery into instant audio tone. This Audio Sound Generator Circuit using IC 555 is easy to build and is great for learning. Circuit Working: Parts […]