Power 100 W "ST151"

[speeddiy]

ST151
100w-RMS audio power amplifier
Supply voltage: +/-40Vdc
Output power - RMS (4Ohm): 100W
Output power - RMS (8Ohm): 60W
Frequency response (100W-4Ohm): 20Hz-20KHz (-0.5dB)
THD (100W-4Ohm, 20Hz-20kHz) < 0.1%
THD (100W-4Ohm, 1kHz) < 0.01%
Input sensitivity (100W-4Ohm): 1Vrms
Input impedance (1kHz): 10kOhm
DC offset: max. +/-10mV
Quiescent current (adjusted with P1): 10mA (3.3mVdc on R14)
Suggested power supply (for one channel):
- 2&times;28V-AC (loaded voltage) 160VA mains transformer
- 10A-200V rectifier bridge
- 10.000uF 50V ELKO / supply rail
Parts list (for one channel)
Resistor
0.33 5W &times;4
6.8 2W &times;1
47 0.5W &times;1
100 0.5W &times;3
220 0.5W &times;2
470 0.5W &times;1
680 0.5W &times;1
820 0.5W &times;2
2.2k 0.5W &times;1
3.3k 0.5W &times;2
6.8k 0.5W &times;2
12k 0.5W &times;1
15k 0.5W &times;2
Capacitor
47p 50V &times;2
470p 50V &times;2
10n 63V MKT &times;2
100n 63V MKT &times;3
220n 100V MKT &times;1
3.3u 50V ELKO (or 16V tantalum) &times;1
47u 50V ELKO &times;2
100u 16V ELKO &times;1
Diode
1N4148 &times;6
1N4003 &times;2
Transistor
BC547 &times;4
BC557 &times;1
BD139 &times;3
BD140 &times;2
BD249C (or TIP35C) &times;2
BD250C (or TIP36C) &times;2
Other
1k trimmpot (6mm horizontal) &times;1
4A fast-blow fuse &times;2
fuse holder &times;2

[speeddiy]

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[speeddiy]

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www.diyaudio.com

http://www.diyaudio.com/forums/showthread.php?s=&threadid=100907&perpage=20&pagenumber=1

[rittichai.l.]

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[pichetchamp]