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 Guitar Preamp – over drive using 12AU7

Tuesday, July 8th, 2014

This is a guitar booster for those with a love for music. act as preamplifier or over drive signal acts soft voice before to the power amplifier or headphones. Highlight is a very clear sound without noise. Because we use 12AU7 vacuum tubes is the main equipment, which is better than any other preamp circuit. […]


 We should use IRF540N HEXFET Power MOSFET

Monday, July 7th, 2014

An IRF540N is HEXFET Power MOSFET that I like to use in many projects. It is very Fast Switching than general transistor. When I compare it with a transistors that I like to use is a TIP41. It have IC ( collector current) about 2A and VCE( collector-emitter voltage) about 40V only. The IRF540N is […]


 How to resolve slowly Internet

Sunday, July 6th, 2014

If you have a slow Internet problems. When I open the page Photos show incomplete. This looks to be on all computers and all sites. I find the cause for a long time. At first thought Virus, but not because we are using ubuntu OS. When I touch a modem router appears that hot. I […]


 Very simple 50 watt inverter using MJ2955

Sunday, July 6th, 2014

Today I need to use AC lamp and Soldering iron at outdoor which no 220V AC electrical current. My friend borrow the 150 watt inverter of me, which I used it in car. It does works so well. So I not have any inverter. Therefore I need to build new inverter. Main idea of circuits. […]


 DIY simple 12v led light

Friday, July 4th, 2014

A LED light bulb is being popularity more than a conventional light bulb. Because It has high efficiency, low power consumption and thus heat resistant. I buy the 12V LED Light Bulb as Figure 1 For use in cars And general use Figure 1 LED light bulb for Car. Then I tried to measure the […]





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