Iron - low frequency power amplifier.

 HARDWARE             
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 (C) ALEX OF CRUSHERS      
                                
                                
 This section, as you have already seen,
guessed it would be dedicated exclusively
a lot of improvements.  Everything is expensive
boots before they are published
forged in our newspaper, checking
are with me. so if you want
do something according to the published schemes
jubilant in our newspaper, then mo-
you can safely pick up the
yalnik.                         
                                
                                
 Today we will talk about enhancing
power level.                
                                
                                
 LOW POWER AMPLIFIER    
 FREQUENCIES             
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 The main part in the amplifier
is an IC K17CHUN14. Purpose
tionmicrocircuit pins:        
                                
 1 - non-inverting input;      
 2 - inverting input;        
 3 - general (-Uu.p.);            
 4 - output;                     
 5 - power supply (+Uu.p.)           
                                
 IC characteristics:         
                                
 Uu.p. - 12...15 V             
 Inot. - 10...80 mA            
 Ubx. - 20...50 mV            
Rvikh. - 0.05..4.5 Вт           
 Kr.   - 0.5...10 %             
                                
    типовая схема включения     
          ИМС К17ЧУН14          
                                
          ┌─────┬───┬───────+12В
          5    +│   │           
     +  ┌─┴─┐   ╪C3 ╪C4         
Вх──╫──1┤   │   └───┴──┐        
   C1 ┌2┤   ├4─┐      ─┴─       
│ └─┬─┘  │ +              
      │   3    ├──╫─┬────┬──Вых 
      │+ ─┴─ R1╧ C5 │C6  │      
      │        ╤    ╪    │      
      └──╫─────┤  R3╧  R4╧      
       C6    R2╧    ╤    ╤      
               ╤    │    │      
               └────┴────┤      
       ─┴─     
                                
  C1 - 19 мк х 10 В             
  C2 - 500 мк х 10 В            
  C3 - 0.1 мк                   
  C4 - 100 мк х 25 В            
  C1 - 19 мк х 10 В             
  C2 - 500 мк х 10 В            
  C3 - 0.1 мк                   
  C4 - 100 мк х 25 В            
  C5 - 1000 мк х 25 В           
  C6 -0.1 μ                   
 R1 - 220 Ohm                   
 R2 - 22 Ohm                    
 R3 - 1 Ohm                     
                                
 Volume can be adjusted
well, if you put pe-
10 Ohm belt resistor.     
 Speakers with a power of 5-10
Watt.                           
                                
 This amplifier worked for
me for half a year, then I did
stereo amplifier, circuit diagram of which
will be in the next issue.       
                                
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