April 14th 2006
Einfacher KT66 PP AMPLIFIER
(ohne SchnickSchnack) Von einem Geschaeftsfreund (einem Musiker) wurde ich, nach dem er meinen ersten KT88SE AMP gesehen und gehoert hatte, gebeten einen AMP fuer ihn mit mehr Leistung (seine Worte "more Power") zu bauen.KT66 Stereo HiFi Amplifier Transformer requirements
By Franz Wichlas DK6NL
Core M85 or EI Type no air gap required (normal stacking)
Arrangement of transformer windings (assembly)
Core size QFe = 13 cm2 (min)
Material 0.35 mm
Frequency range 30 Hz to 25 kHz
Distribution |
Turns |
Wire size |
P 1 |
1150 |
0.15 to0.2 mm |
S 1 |
100 |
0.5 to 0.6 mm |
P 2 |
1150 |
0.15 to0.2 mm |
P 3 |
1150 |
0.15 to0.2 mm |
S 4 |
100 |
0.5 to 0.6 mm |
P 4 |
1150 |
0.15 to0.2 mm |
|
Tube type |
Voltage |
Current |
Result |
||
|
( in Volt ) |
( in mA ) |
in V/A = Watt |
|||
Beispiel |
at Transformer |
1100 |
|
|||
|
|
|
|
|||
Röhre 1 HZ GL |
|
|
|
|
||
Röhre 2 HZ |
KT66 |
6.3 |
1400 |
8.82 |
||
Röhre 3 HZ |
KT66 |
6.3 |
1400 |
8.82 |
||
Röhre 4 HZ |
ECC82 |
6.3 |
300 |
1.89 |
||
Röhre 5 HZ |
ECC82 |
6.3 |
300 |
1.89 |
||
Röhre 6 HZ |
ECC83 |
6.3 |
300 |
1.89 |
||
Röhre 7 HZ |
KT66 |
6.3 |
1400 |
8.82 |
||
Röhre 8 HZ |
KT66 |
6.3 |
1400 |
8.82 |
Heater current | |
|
|
|
|
|
6.50 |
in A |
Röhre 2 AS |
KT66 |
200 |
85 |
17.00 |
||
Röhre 3 AS |
KT66 |
200 |
85 |
17.00 |
||
Röhre 4 AS |
ECC82 |
200 |
25 |
5.00 |
||
Röhre 5 AS |
ECC82 |
200 |
25 |
5.00 |
||
Röhre 6 AS |
ECC83 |
200 |
25 |
5.00 |
||
Röhre 7 AS |
KT66 |
200 |
85 |
17.00 |
||
Röhre 8 AS |
KT66 |
200 |
85 |
17.00 |
||
Röhre 9 AS |
|
|
|
0.00 |
||
|
|
|
|
0.00 |
Plate current | |
|
|
|
|
0.00 |
415 |
in mA |
|
||||||
Calculated power |
143 |
|||||
To give some reserve would like to apply the following ratings |
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Heater 6.3 V 8 Amps |
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Plate 500 mA |
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Total power approximately |
150 Watts |
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