Circuit Lake » Amplifier

300W Power amplifier, Bridged-Paralleled

admin — Sun, 26 Sep 2010 00:51:40 +0000

The project goal is to create 300W audio power amplifier for 4-ohm DIY speaker with low distortion based on IC LM3886. It’s hope that the amplifier can produce deep, tight and punchy bass while keeping the excellent mids and highs from other gain clones.The schematic uses LM3886 in the inverted configuration, the reason is [...]

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Motorola Signal Booster Bi-Directional RF Amplifier

admin — Thu, 19 Aug 2010 00:59:47 +0000

The Motorola Signal Booster enhances analog and digital picture quality, improves cable modem communication, and reduces lost data. It’s fast and effortless way to make your signal strength up to 32 times more powerful. You can install it easily without need any tools. This device allows you to optimize multiple broadband devices in your home [...]

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40W Power Amplifier for FM Broadcast

admin — Tue, 09 Jun 2009 23:49:20 +0000

If you want to boost the output power of your low power FM broadcast band exciters then you can try this project, 40W broadband VHF RF Power Amplifier. The amplifier design is based on the recently introduced (1998) Motorola MRF171A MOSFET. The initial feasibility was performed using a linear RF and microwave simulation package, [...]

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LeachAmp 200W Audio Amplifier

admin — Mon, 08 Jun 2009 00:54:42 +0000

This project will show you how to build DIY LeachAmp 200W Audio Amplifier. Pavel build this audio amplifier based on Marshall Leach project, that’s why the amplifier dubbed as The Leach Amp. This HiFi amplifier has a good parameters, enough power reserve and simple construction. This audio project has better output compared to integrated circuits [...]

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Battery-Powered Audio Amplifier

admin — Wed, 20 May 2009 23:33:33 +0000

Ruby is an “enhanced” version battery-powered amplifier. The project use LM386 – Low Voltage Audio Power Amplifier as main part. 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 386 chip. As you increase the Volume, you [...]

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Class A Mosfet Headphone Amplifier

admin — Mon, 24 Nov 2008 11:16:38 +0000

This is a simple and low cost desktop headphone amplifier for the office. 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 [...]

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