Optical transmission detection circuit
In this circuit, phototransistor and four operational amplifier take the action of total energy detector, to detect the total energy of pulse optical transporte...
Object motion detector circuit diagram
The heart of the motion detector movement detection circuit is motion detection chip IC1 (KC778B). The signal frequency from PIR sensor is low (0.1Hz ~ 10Hz) wh...
Object motion detector circuit diagram
The heart of the motion detector movement detection circuit is motion detection chip IC1 (KC778B). The signal frequency from PIR sensor is low (0.1Hz ~ 10Hz) wh...
Metering circuit using PbS PbSe
This circuit canbeused for detecting infrared light, for example, it is used for detecting infrared band light signal in spectrophotometer. Amplifier output vol...
Metering circuit using PbS PbSe
This circuit canbeused for detecting infrared light, for example, it is used for detecting infrared band light signal in spectrophotometer. Amplifier output vol...
HALL SENSOR CURRENT MONITOR
The circuit uses a Hall-effect sensor, which consists of an IC that resides in a small gap in a flux-collector toroid, to measure dc current from 1 to 40 A. Wra...
HALL SENSOR CURRENT MONITOR
The circuit uses a Hall-effect sensor, which consists of an IC that resides in a small gap in a flux-collector toroid, to measure dc current from 1 to 40 A. Wra...
CARBON MONOXIDE DETECTOR
This circuit has a focused optical sensor to transmit light to the CO reagent, and then sense the amount of light reflected. The reagent for CO detection darken...
CARBON MONOXIDE DETECTOR
This circuit has a focused optical sensor to transmit light to the CO reagent, and then sense the amount of light reflected. The reagent for CO detection darken...
Bearing fault detector circuit diagram 2
The bearing fault detection circuit is composed of the bearing detection sensors, signal processing circuit and sound and light circuit, and it is shown as the ...
Bearing fault detector circuit diagram 2
The bearing fault detection circuit is composed of the bearing detection sensors, signal processing circuit and sound and light circuit, and it is shown as the ...
Bearing fault detector circuit diagram 1
The bearing fault detector circuit is composed of the bearing detection sensor, signal processing circuit, transistor V, audio amplifier integrated circuit IC2,...
Bearing fault detector circuit diagram 1
The bearing fault detector circuit is composed of the bearing detection sensor, signal processing circuit, transistor V, audio amplifier integrated circuit IC2,...
Access room people number counter circuit
Working principle: Two pairs of photoelectric detection devices are installed in the access channel. On one side the light source A (transmitter) and the photor...
Access room people number counter circuit
Working principle: Two pairs of photoelectric detection devices are installed in the access channel. On one side the light source A (transmitter) and the photor...
OPTICALLY ISOLATED ANALOG MULTIPLEXER
The circuit described here provides three channels of optically isolated input that will work for many precision signal-acquisition applications. The only power...
OPTICALLY ISOLATED ANALOG MULTIPLEXER
The circuit described here provides three channels of optically isolated input that will work for many precision signal-acquisition applications. The only power...
The electronic thermometer circuit diagram for blind
Measuring range: room temperature is -10 ~ 40 ?; body temperature is 36 ~ 41 ?; Resolution: room temperature is 0.5 ?, body temperature is 0.05 ?; error: room t...
The electronic thermometer circuit diagram for blind
Measuring range: room temperature is -10 ~ 40 ?; body temperature is 36 ~ 41 ?; Resolution: room temperature is 0.5 ?, body temperature is 0.05 ?; error: room t...
Simple water detector circuits
This simple water detector circuit uses alternative voltage in order to prevent the corrosion of the electrodes. It is easy to build and uses N1 as a trigger Sc...