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electric field disturbance – Circuit Schematic
electric field disturbance
Circuit This schematic is the power supply and front-end sections of the field monitor that is discussed in more detail at Electric Field Disturbance Monitor. (...
make electromagnetic field – Circuit Schematic
make electromagnetic field
This circuit is a real gem! Easy to make and more sensitive than many commercial devices available. It`s based around an LF351 low-noise operational amplifier a...
laser diy schematics – Circuit Schematic
laser diy schematics
No DIY espionage kit is complete without a long-distance listening device, and no DIY long distance listening device is complete unless it uses a sweet laser in...
water detector circuit for your – Circuit Schematic
water detector circuit for your
Today i want to share with you all my water sensor. This is my second successful project when i started with electronic hobby. This circuit is useful for your p...
water level indicator with – Circuit Schematic
water level indicator with
When the water is empty the wires in the tank are open circuited and the 180K resistors pulls the switch low hence opening the switch and LEDs are OFF. As the w...
water liquid level sensor relay switch – Circuit Schematic
water liquid level sensor relay switch
Here is a schematic of a simple water or liquid level sensor relay switch circuit, which can be used to switch on or off electronic appliances at the desired le...
water level indicator – Circuit Schematic
water level indicator
This is a simple water level indicator circuit or water level sensor circuit. The circuit is very easy to build and contains only three PNP transistors and some...
temperature sensor relay switch circuit – Circuit Schematic
temperature sensor relay switch circuit
on the desired temperature. The circuit can be used for many purposes for example switch on the fan on the desired temperature or activate emergency temperature...
temperature sensor circuit – Circuit Schematic
temperature sensor circuit
The schematic shown here is a project of a simple temperature sensor circuit or we can also say it a heat sensor circuit, which will activate an LED when receiv...
temperature control circuit 555 ic – Circuit Schematic
temperature control circuit 555 ic
A Thermistor is used in the circuit for sensing the heat and two 5K variable resistors are used to adjust the circuit to activate the relay on the desired tempe...
simple water level sensor liquid detector – Circuit Schematic
simple water level sensor liquid detector
A simple water level sensor or liquid level detector for measuring or detecting a required level of water, liquid, fluid in a tank, pool, well, aquarium, washin...
simple water level buzzer circuit – Circuit Schematic
simple water level buzzer circuit
Here is a simple water level buzzer circuit which can be used to detect or sense the level of water in tank, pool, washing machines etc. When the two probes sho...
simple touch switch circuit – Circuit Schematic
simple touch switch circuit
Here is a project of a simple touch switch circuit. This circuit and can also be used to activate a relay in the place of LED and resistor. The circuit is quite...
plant watering watcher dry soil detector – Circuit Schematic
plant watering watcher dry soil detector
The schematic shown here is a circuit of plant watering watcher or dry soil detector. The plants located in your home or office wants more care as compare to th...
plant soil moisture tester circuit – Circuit Schematic
plant soil moisture tester circuit
A very simple and useful project of soil moisture circuit. The circuit is using only four components and a 3 volt battery. The circuit will detect if there is w...
light sensor circuit – Circuit Schematic
light sensor circuit
This is a light sensor circuit which will detect light and switch on the relay. This light switch circuit is very simple and using only few components. Working ...
ir detector circuit – Circuit Schematic
ir detector circuit
Our eyes are very sensitive to light but they cannot see the IR (Infrared) radiations so it is some time difficult to test or check the equipments which emits i...
infrared detector circuit – Circuit Schematic
infrared detector circuit
Here is a very simple infrared detector circuit which can be used to detect infrared light. The circuit is consist of only three components a RS-276-145 photo t...
heat temperature sensor alarm – Circuit Schematic
heat temperature sensor alarm
Here is a simple and easy to make heat or temperature sensor alarm circuit. A good feature of this circuit is that it will produce beep-beep sound and flashes a...
dark sensor relay switch lm741 – Circuit Schematic
dark sensor relay switch lm741
Here is the project/schematic of LM741 dark sensor relay switch circuit. The circuit will activate the relay switch when there is no light on the surface of LDR...