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How to Repair VIGO Welding Machine MMA 255(IGBT)

on July 14, 2020

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How to make 7 Band Equalizer for Any Amplifier - DIY Equalizer Amplifier

Component list: 1. Potentiometer seven units of size 50K or 100K 2. Elko one unit measure between 1uF to 100uF ... voltage free 3. capacitor or ceramic or mylar or whatever ... six units, consisting of: a. 102 (one nano farad) one unit b. 332 (three point three nano farad) one unit c. 562 (five point six nano farad) one unit d. 103 (ten nano farad) one unit e. 223 (twenty two nano farad) one unit f. 333 (one nano farad) one unit 4. Resistor 14 units, consisting of: a. 560 : two units b. 1K5 : two units c. 3K3 : two units d. 5K6 : two units e. 10K : two units f. 22K : two units, and g. 47K two units ===================

How to make Simple 7 Channel Equalizer all Powerful Amplifier at home

This circuit is 7-band graphic equalizer, you can adjust the sound of low, medium and higher than the IC op amp circuit used 741. With this circuit you can control and mix of frequencies and tones to your liking. In essence, the circuit comprises an IC 741, whose gain is determined by several freguencies adjustment potentiometer. Audiblefrequency spectrum is covered in six steps: 50Hz, 160Hz, 500Hz, 1.6kHz, 5kHz 16kHz, Level. All potentiometers are linear 50kΩ. The circuit provides adequate boost / cut for normal use. power supply for the circuit can be derived from the amp / preamp itself. The supply voltage range of rangeof (6V-20V) makes the circuit very versatile. Power consumption is negligible. list Component R1,R2,R3,R4,R5,R6 : 27kΩ C1: 100n C6: 300pF R7: 470kΩ C2: 33n C7: 100uF/16V R8: 330kΩ C3: 10n C8: 4.7uF/16V R9: 100kΩ C4: 3.3n C9: 47uF/16V R10: 4.7kΩ C5: 1n IC1: 741 ...

DIY Powerful Subwoofer Bass 400W Amplifier 4 Transistor 2SA1943 , No IC ...

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How to Repair VIGO Welding Machine MMA 255(IGBT)

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