All posts in the 'Amplifier projects' Category
Posted on 11 Oct 2008
This is a simple do-it-yourself (DIY) headphone amplifier project that is fashioned primarily after the Class A MOSFET Headphone Driver project by Greg Szekeres and to some extent Mark’s DIY Class A 2SK1058 MOSFET Amplifier Project. The amplifier concept is simple and follows a typical single-ended class A circuit utilizing an active constant current source (CCS) in place of a passive resistor. A CCS doubles the efficiency of the circuit over that where a passive load resistor is used, bringing it to a maximum of 25%.[more]
Posted on 04 Aug 2008
Ruby is a battery-powered amplifier.Ruby has many shades of sparkly clean all the way up to a great, natural overdrive. The input buffer helps to retain treble detail going into the LM386 chip. As you increase the Volume, you will start getting nice breakup. [more]
Posted on 28 Jul 2008
The amplifier is very popular among DIYers around the world.CMoy Amplifiers are named after Chu Moy, who designed the pocket battery-powered amplifier and published the paper on his website. These amplifiers were designed to give audio fidelity and power to headphones. A CMoy is powered from a single 9V battery and can last at least 40 hours of listening.This amp build around OPA134PA op-amp.[more]
Posted on 13 May 2008
This is an 8 ohm attenuator built using an 8 ohm L-Pad. 4, 8 and 16 ohm versions are possible. The 4 ohm version would be built using a stereo 8 ohm L-Pad with the terminals wired in parallel. [more]
Posted on 26 Apr 2008
This effect was developed due to a couple of wonderful guitar devices: SansAmp GT2 (by Tech21) & Guv’Nor (by Marshall). The Overdrive section were taken from SansAmp and Tone-control (EQ) section were taken from Guv’Nor. The next features were added: hi-impedance (1 MOhms) INput to decrease pickup’s signal degradation and bufferred low-impedance OUTput to satisfy any next circuits (long cables, low-impedance mixer’s INput and so on). Scheme is deprived next flaws of SansAmp: pops on switching on/off of the effect, strong noise in pauses, no “mid” control EQ. [more]
