Tests and Measurement - Circuits - Electronic Blog for hobbyist

Lying tester circuit using biofeedback

With this electronic scheme can be tested a person whose status is modified in certain situations (as in the polygraph test) by "observing" biofeedback. Because a person's skin resistance depends on the state in which that person is, skin resistance increases with depth state of relaxation. ... Read more »

Category: Tests and Measurement | Views: 798

Pic meter using PIC16C622

Using microcontrollers you can design many interesting and useful electronic projects . This electronic project circuit is based on PIC16C622 microcontroller ( manufactured by Microchip ) . This PIC project is a simple resistance and capacitance "Pic Meter” which can measure resistance in the range 1W to 999W and capacitance from 1 nF to 999 nF. ... Read more »

Category: Tests and Measurement | Views: 971

4-channel digital voltmeter on PIC16c71

Simple 4-channel digital voltmeter with LED-display and keyboard .

This digital voltmeter is based on PIC16C71 (Microchip). The PIC16C71 device’s I/O ports have an improved sink/source specification. Each I/O pin can sink up to 25 mA and source 20 mA. In addition, total PORTB source current is 100 mA and sink current is 150 mA. ... Read more »

Category: Tests and Measurement | Views: 1233

Digital Radar Speedometer

This circuit is a Digital Radar Speedometer. It allows us to evaluate the speed of any object moving, especially cars and other vehicles. The speed is calculated in kilometers per hour (KPH). ... Read more »

Category: Tests and Measurement | Views: 1194

IR Remote Control Tester

Simple construction for repeat, ideal for beginners ... Read more »

Category: Tests and Measurement | Views: 843

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