Showing posts with label 45. Show all posts
Showing posts with label 45. Show all posts
Thursday, April 11, 2013
45 WATT AMPLIFIER CLASS B
45 WATT AMPLIFIER CLASS B
Power transistors Q8 and Q9 Can be Used satisfactorily: 2N3055/MJ2955, TIP3055/TIP2955, TIP35/TIP36, MJ802/MJ4502 amongst others.
Power transistors Q8 and Q9 Should be mounted on a black, finned heatsinks as usual.
Technical data:
Output power (1KHz sinewave): 45 Watt RMS into 8 Ohms - 69W RMS into 4 Ohms
Sensitivity: 0.81V RMS input for 45W output
Frequency response @ 1W RMS: 15Hz to 23KHz -0.2dB
Total harmonic distortion @ 1KHz: 1W 0.008% 20W 0.008% 45W 0.016%
Total harmonic distortion @10KHz: 1W 0.01% 20W 0.015% 45W 0.025%
Unconditionally stable on capacitive loads
List Component
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Power transistors Q8 and Q9 Can be Used satisfactorily: 2N3055/MJ2955, TIP3055/TIP2955, TIP35/TIP36, MJ802/MJ4502 amongst others.
Power transistors Q8 and Q9 Should be mounted on a black, finned heatsinks as usual.
Technical data:
Output power (1KHz sinewave): 45 Watt RMS into 8 Ohms - 69W RMS into 4 Ohms
Sensitivity: 0.81V RMS input for 45W output
Frequency response @ 1W RMS: 15Hz to 23KHz -0.2dB
Total harmonic distortion @ 1KHz: 1W 0.008% 20W 0.008% 45W 0.016%
Total harmonic distortion @10KHz: 1W 0.01% 20W 0.015% 45W 0.025%
Unconditionally stable on capacitive loads
List Component
- R1: 18K
- R2: 3K9
- R3,R6: 1K
- R4: 2K2
- R5: 15K
- R7: 22K
- R8: 330R
- R9,R10: 10R
- R11,R12: 47R
- R13: 10R/1 Watt
- C1: 1µF/63V
- C2: 470pF/63V
- C3: 47µF/25V
- C4: 15pF/63V
- C6: 220nF/100V
- C6: 100nF/63V
- D1,D2,D3,D4: 1N4148
- Q1,Q2: BC560C
- Q3,Q4: BC556
- Q5: BC546
- Q6: BD139
- Q7: BD140
- Q8: 2N3055
- Q9: MJ2955
Sunday, April 7, 2013
45 W Stereo Tube Amplifier
Stereo Amplifier with Tube
Stereo amplifier is very simple, consisting of 5 active components including the power supply it. Series Stereo Amplifier With Tube was prepared with 5 units trioda tube consisting of 1 unit tubes 5Y3 GT vacuum rectifier, 2 tube tube trioda 6SF5 GT high-mu tube 6k6 and 2 units which form the power beam amplifiers.
Power consumption for the circuit with a tube stereo amplifier is not more than 45 Watt. Current consumption for the circuit with a tube stereo amplifier is around 3A. A complete range of stereo amplifiers with this tube can be seen from the following series of images.
Stereo Amplifier With Tube
Sign Component Stereo Amplifier With Tube
- R1, R10, R13 2.2M
- R2 470K 1/2W
- 1 Meg 1/2W R3
- R4 220K 1/2W
- R5 330 Ohm 2W
- R6 220K 1/2W
- R7 2.2Meg 1/2W
- R8 1Meg 1/2W
- R9 720 Ohm 20W
- R11 33K 1/2W
- R12 22K 1/2W
- C1, C9 400V 0.005uF
- C2 0.05uF 600V
- C3 20uF 25V
- C4 0.01uF 400V
- C5 200uuF 400V
- C6, C7 15uF 450V
- C8 15uF 400V
- T1 117V Primary, Secondary 350VCT, 2 × 6.3V
- T2 7600 Ohm Primary, Secondary 4 or 8 Ohm
- SW1 SPST Switch
- SP1, SP2 12 "4 / 8 ohm
- C8 in the series stereo tube amplifier with the above serves to reduce radio frequency interference and to optimize the work of a wild series of ampifier stereo with these tubes.
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