Aspect #03 10 января 1998

Железо

DIY - The scheme of the mini-amplifier.

               DIY



            (C) Arny Sinen 1998

          ________________________


  Bring to your attention yet another scheme miniusilitelya. 
This amplifier is ideal for the Spectrum, because He has a very 
small current consumption, as well same for small stress it 
produces the maximum output power that it is very important for 
weak power supplies. For this amplifier can connect speakers 
with an output power up to 5W. With more high-power amplifier 
can be burned. By the way, he can burn if you apply

at him all the 12 volts and keep in running condition for about 
10 hours, so Use radiator. With the radiator can be

to Use with no time limits.

  Mono amplifier. For me is not clear why you would need stereo 
AY891X. In first of all different standards through

(A-left, B-common, C-right; A-left,
C-right, B-common) and you do not hear that
conceived by the author. Second of two amplifiers need twice as 
much power, and for many PSU is dead.



                1 X 1.5
Circuit diagram:
R1 = 1,8 K
C1 = 0,47 mF
C2 = C3 = 4,7 mF
C4 = 47mF
C5 = 1000mF



Concept:



        Amplifier performance:

Pout = 1W - nominal (1,5 W - max)
Upow = +3 ... + 12V
Ipotr (Uout = 0) = 10mA
Ipotr _max_ne_bolee_150mA_ (microamperes)
frab = 40 ... 18000Hz
Uin = 10 ... 100mV
Rin = 10 Ohm

If you have any questions, please contact us at 500:812 / 28.07 
@ SPbZxNet to: Arny Sinen. 

Can also order ready-made amplifiers,
willing to pay the designers.