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Touch Switch – Circuit Schematic
Touch Switch
Here is a touch switch that can be used to drive LEDs, relays etc through a buffer transistor stage. It may be built around any CMOS inverter chip ...
Water level indicator using 7-segment display circuit design – Circuit Schematic
Water level indicator using 7-segment display circuit design
Using this schematic electronic project can be designed a very simple water level indicator electronic circuit that uses a 7-segment display to indicate the wat...
Water level indicator circuit using CMOS ICs – Circuit Schematic
Water level indicator circuit using CMOS ICs
A very simple low cost water level indicator circuit can be designed using this schematic circuit. This water level indicator is based on a simple CMOS IC CD406...
Ultrasonic parking sonar circuit design project – Circuit Schematic
Ultrasonic parking sonar circuit design project
A very simple ultrasonic parking sonar electronic project can be designed using this schematic circuit. This ultrasonic parking sonar electronic project has an ...
ULN2429 liquid detector circuit diagram electronic project – Circuit Schematic
ULN2429 liquid detector circuit diagram electronic project
This electronic liquid detector circuit diagram is based on the ULN2429 monolithic bipolar integrated circuit designed for detecting the absence or presence of ...
Touch sensor switch using inverters – Circuit Schematic
Touch sensor switch using inverters
This touch sensor switch can is designed using inverters (N1, N2)and some common electronic components. In standby state at the entrances of N1 there is a signa...
System for solar orientation using common electronic parts – Circuit Schematic
System for solar orientation using common electronic parts
The solar orientation circuit uses a comparator with window control that maintains engine idle as long as the two LDR`s (photoresist) are subjected to the same ...
Simple lie detector circuit design electronic project – Circuit Schematic
Simple lie detector circuit design electronic project
This lie detector circuit described eally give two readings: one for the difficult questions and one show subject general emotional state. As electrodes can be ...
Sensor switch circuit 9 channels – Circuit Schematic
Sensor switch circuit 9 channels
This sensor switch circuit has nine channels and consist of only three integrated circuits and some resistors. Due to high input impedance, 74HC147 allows to us...
Proximity detector schematic – Circuit Schematic
Proximity detector schematic
A very simple proximity detector electronic project can be designed using this schematic circuit. This proximity detector electronic project use a tone decoder ...
Proximity detector electronic project circuit design – Circuit Schematic
Proximity detector electronic project circuit design
A very simple proximity detector can be made using this electronic scheme. This electronic circuit reacts to the presence of a conductive object within a partic...
LM1830 low level detector schematic circuit design – Circuit Schematic
LM1830 low level detector schematic circuit design
This LM1830 low level detector can use an audio indication (speaker ) or a visual indicator (LED- light emitting diode ) that will light when the level is too l...
Liquid detector circuit diagram using logic gates – Circuit Schematic
Liquid detector circuit diagram using logic gates
The liquid detector is a detector with liquid alternating voltage and can be built using some common electronic components. Voltage alternative for this circuit...
Liquid detector circuit diagram electronic project – Circuit Schematic
Liquid detector circuit diagram electronic project
This liquid detector circuit diagram is designed using common electronic components. The liquid detector may operate an active buzzer, to make a sound when is r...
Ion detector circuit diagram electronic project – Circuit Schematic
Ion detector circuit diagram electronic project
This ion detector circuit detects static charges and free ions in the air. This ion detector circuit can be used for detecting presence of free ions, static ele...
Infrared detector circuit using PID20 – Circuit Schematic
Infrared detector circuit using PID20
This infrared detector circuit is designed using the PID20 integrated circuit manufactured by Siemens (which converts thermal radiation into electrical impulses...
Humidity detector circuit electronic project – Circuit Schematic
Humidity detector circuit electronic project
This humidity detector circuit diagram is very simple and uses few components and can be used for activation of an electronic devices when the detector senses a...
Fluid lever sensor circuit design using ac signal – Circuit Schematic
Fluid lever sensor circuit design using ac signal
This fluid level sensor circuit is designed for using an ac sensing signal to eliminate electrolytic corrosion on the probes. The ac signal rectified is used to...
Dual level liquid sensor circuit design using CA3410 op amp – Circuit Schematic
Dual level liquid sensor circuit design using CA3410 op amp
This level liquid sensor electronic circuit diagram is based on a common Ca3410 operational amplifier IC. This level liquid sensor electronic circuit use two pl...
Water sensor circuit using 555 timer – Circuit Schematic
Water sensor circuit using 555 timer
The water sensor circuit is based on a 555 timer circuit and come common electronic components. The water sensor is made by two metal electrodes arranged very c...