More about Amplifier (482)

1-10-2003 | In the first part of this article, we described all of the circuit boards. Now it’s time to look at how they fit together. We first describe...

1-10-2003 | It is not just power amplifiers that can deliver the much sought-after warmth of the ‘valve sound’ — headphone amplifiers can too. What is s...

1-10-2003 | Most commercial preamplifiers and power amplifiers have a headphones output. However, because of its simplicity the sonic quality of such an...

1-09-2003 | This stereo preamplifier is primarily intended to be used as a companion to the Valve Final Amplifier described in the April and May 2003 is...

1-07-2003 | The AN7147 Dual 5.3-watt Audio Power Amplifier from Panasonic is listed as a ‘replacement type’ so hopefully will be around for some time to...

1-07-2003 | Since modern sound systems usually lack inputs for record players, separate MD preamplifiers are becoming increasingly popular. They are nee...

1-02-2003 | In this semiconductor age, we find valves being used increasingly often for hi-fi and guitar amplifiers, top-end condenser microphones and s...

1-12-2002 | Butterworth filters, and to a lesser degree Bessel filters, are probably the most commonly used types of analogue filters. However, in circu...

1-09-2002 | This power supply unit (PSU) provides hum-free and stable operating voltages for valve preamplifiers and power stages. Negative bias voltage...

1-07-2002 | Elsewhere in this collection of small circuits a 1-dB version of a third-order Chebyshev filter can be found. This 3-dB version is a bit ste...