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 Low-volts Crystal Frequency Generator Circuit

Thursday, December 18th, 2014

We can easily use FET and Crystal to generate the frequency and In particular, this circuit use very low voltage. It can operate at a supply voltage to 1.5 volts only and at crystal frequency 100 KHz to 10 MHz. The crystal is connected to between the drain and gate of FET-T1 BF256. It runs […]

 Simple Crystal oscillator Circuit

Wednesday, December 17th, 2014

This is simple crystal oscillators that provided square wave of 1MHz to 10MHz, Use an inverter gate IC and control frequencies with crystal. A oscillator or a frequency generator provide waveform out in various forms. For example : sine wave, Triangular waveform, Or square wave. The Frequency generator to control or out for a base […]

 Many the 12V 1A power supplies circuits

Sunday, December 14th, 2014

Mr jafar need to use the 12 volts 1 amp DC Power Supplies. In my sites has many circuits related them. – Cheap and old but sure, use transistor and zener as main http://www.eleccircuit.com/simple-regulator-by-transistor-c1061/ http://www.eleccircuit.com/dc-power-supply-9-volt-using-tip31-transistor/ – Cheap and popular all times, use IC7812 http://www.eleccircuit.com/regulator-5v6v9v12v-1a-by-ic-7805780678097812/ Note: If you have a 1A normally circuit. So your 12V […]

 D/A converter circuit for motor controller

Saturday, December 13th, 2014

We control easily a motor to stop and rotate. If need to control it on linear feature is speed high-low difference so use this circuit. In Figure below, we use the 4 bit comparator circuit that output to the input of EXCLUSIVE-OR gate. Then, it is fed to the voltage divider circuit. Which is final […]

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