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Archive for the ‘Oscillator’ Category


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


 Cheapest signal cleaner circuit

Monday, September 29th, 2014

Here is the simple low noise filter circuit for any FSK signals that weak and have noise. This use few parts so easy and cheap. Fig 1: The schematic of this project As Figure 1 is the schematic diagram. This circuit include the low filter circuit through R1 and C2, the frequency cut off at […]


 Wien bridge oscillator circuit

Wednesday, September 17th, 2014

This wien bridge oscillator circuit which is normal,low distortion and can easily adjust the resonance frequency that depends on the pair of the resistors (R) and capacitors (C). Which we can calculate by the formula. F = 1/2 p RC In this circuit as Figure 1 the oscillator are based by the R that include […]


 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. […]


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