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Archive for the ‘Oscillator’ Category


More circuits about oscillator, pulse, frequency , and others.

 The Filter circuit for the Scratch and Rumble Noise

Wednesday, July 23rd, 2014

If a friend gets into trouble about the noise. Try out this circuit before, may like. It is Filter the Scratch and Rumble Noise Circuit. That make a friend feels annoyed very the character of the circuit filters this frequency , use , Resistor , and , Capacitors , or , RC Filter that often […]


 Band rejection filter circuit using TL071

Wednesday, July 23rd, 2014

The band rejection filter circuit is not wide filter that can denial the frequency up to 60dB by we used the TL071 single chip op-amp it is very low distortion and work good at output to maximum to 100kHz or the range 1Hz to 20kHz In the circuit we defined three resistors R1,R2,R3 are like […]


 Simple Handheld Electronic Pulse Massager

Tuesday, May 6th, 2014

This is simple handheld electronic pulse massager. Which helps relax the muscles by electric pulse waves. Ideal for those muscles all the time, such as standing or hand throughout the day. This machine is small And is powered by 9 volts battery, so it’s safe. You can also customize the frequency and strength as well. […]


 ECG simulator using CD4521 and CD4017

Saturday, March 8th, 2014

ECG is very useful in the medical community. Such as experimental research and development of bio-medical imaging. But this should not be taken with patients because we do not want that. The real purpose is that it is used to preview a heart rate only. In general measuring the rate of heartbeat will get a […]


 The experiment use inverter gate as oscillator circuit.

Saturday, January 11th, 2014

The experiment use inverter gate as oscillator circuit. We will try to take an inverter gate to test fun circuit. The inverter that use is CMOS also be use the number : MC14069B. Or if not have used the old NAND gate : MC14011B. Then, take input joint together into the same inverter form. Connect […]


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