Logic Digital Tester by LM324

Wednesday, October 1st, 2008
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This is Logic Digital Tester Circuit. It uses the level input about 5V and use the integrated circuit LM324. Be Main Part electronics perform Drive All LED. Then use Current very low about 10mA by have potentiometer be formed fine the value threshold give [...]

Servo pulse to PWM converter by LM324

Wednesday, July 23rd, 2008
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The circuit presented on this page attemps to be an interface to convert pulses such as provided by a Basic Stamp or R/C receiver to a dual PWM(Pulse Width Modulation) signal required by an H-bridge. The simplest circuit would use a small microcontroller like a PIC. This circuit takes a more traditional approach. Many experimenters [...]

Light Actuated Switch KIT

Friday, June 20th, 2008
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This is small electronics kit Light Actuated Switch KIT.
It is automatically turn something on at night time and back off at dawn. A heavy duty relay provides NO and NC contacts rated at 5A at 24V. IC LM324 design delay circuit avoids cycling on/off at marginal thresholds. Wide range sensitivity adjustment matches any [...]