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| Articles about Audio Amplifier |
| Simple LM386 Audio Amplifier | | 2008-02-23 20:43:03 | | This simple amplifier shows the LM386 in a high-gain configuration (A = 200). For a maximum gain of only 20, leave out the 10 uF connected from pin 1 to pin 8. Maximum gains between 20 and 200 may be realized by adding a selected resistor in series with the same 10 uF capacitor. The [...]... | | By: Circuit Project Electronic | | |
| | Low distortion 30W audio amplifier | | 2008-02-21 20:54:43 | | This is an unusual circuit for an ultra-low distortion power amp. According to my original notes the circuit is dated January 1977 so the circuit is not exactly modern but it is still sufficiently different to be interesting. The circuit was designed and sold as a card by a purveyor of surplus components but, even [...]... | | By: Circuit Project Electronic | | |
| | 3W - 5W Class-A Audio Amplifier by BD439 | | 2008-02-16 02:11:34 | | Behaves like a one-valve operated amplifier
Simple circuitry - No cross-over distortion
In the old valve days, most commercial audio amplifiers suited for compact integrated mono or stereo record players used a one-valve amplifier topology. The circuit was usually implemented by means of a multiple type valve, e.g. a triode pentode ECL86.
Common features for those amplifiers were: [...]... | | By: Circuit Project Electronic | | |
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| 10W Audio Amplifier with Bass-boost by NE5532 + TIP41 | | 2007-10-27 14:25:00 | | Parts:
P1_________________22K Log.Potentiometer (Dual-gang for stereo)
P2________________100K Log.Potentiometer (Dual-gang for stereo)
R1________________820R 1/4W Resistor
R2,R4,R8____________4K7 1/4W Resistors
R3________________500R 1/2W Trimmer Cermet
R5_________________82K 1/4W Resistor
R6,R7______________47K 1/4W Resistors
R9_________________10R 1/2W Resistor
R10__________________R22 4W Resistor (wirewound)
C1,C8_____________470nF 63V Polyester Capacitor
C2,C5_____________100µF 25V Electrolytic Capacitors
C3,C4_____________470µF 25V [...]... | | By: Circuit Project Electronic | | |
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