Free electronic circuit design and schematic diagram
This is a 9V battery hack video. This video explain how to hack the 9V battery and uses it for other devices. First, using pliers, open the chasing of the battery. It’s nothing dangerous inside the battery. There are six small batteries inside the 9V battery. Actually, this small batteries are the quadruple batteries. Each battery has 1.5V. These batteries […]
Read moreThis is a video about free hidden electricity. This video discover the secret source of electricity that the power company and phone company hide. To discover this secret source, we need a phone line. Every phone line has between 40 to 7 volts. Beside that, to uses this secret source, we need two resistor, a regulator and bridge rectifier. In […]
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FM demodulation can be done with phase locked loop (PLL), and this method is common in high-end communication system. This system uses TC9400 that has high linearity. Using TC9400, the performance of phase-locked loop will increases greatly. That will give very precise tracking of Vout with respect to Fin. Here is the block diagram of the FM demodulation with a […]
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Another application of FVC (frequency-to-voltage converter) is tone/frequency decoder. This circuit is used to determine the frequency band of an oscillation signal. This circuit is used in many application like determines the frequency band in the signal and remote control where the frequency band corresponds to a different command. This circuit uses TC9400 F/V converter to convert the frequency to […]
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If we don’t need a very fast analog-to-digital conversion (ADC), by combining TC9400 V/F converter with a counter, latch and time base, we can build a13 bit binary A/D converter. A 1 second time base will provide one conversion per second when the V/F converter is set up for 10KHz full scale. The high input impedance of TC9400 make it […]
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This is a schematic diagram of Permanent Magnet Motor Control circuit. This circuit is used to control the permanent magnet control. This circuit uses alternistor triac to enhance commutation characteristics because the PM motor is a generator where the standard triac difficult to commutate properly. The full-wave DC rectification is needed for PM motors. Here is the schematic diagram of […]
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This is a Reduced Hysteresis Diac-Triac Phase/Power Control circuit. This circuit is used to control from 5% to 95% of full load power. This circuit can decrease the hysteresis effect to a reasonable region. It can be done because this circuit uses second RC phase-shift network. Beside that, the second RC phase-shift network also extends the range on control. This […]
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