Replacement for STK4192 II

Both are pin-to-pin compatible and have very little differences. You can replace a 4192 with a 4191 without any worries.
The only difference is in THD rating which depends on the mark like mark II, V, X etc and minor changes in the internal circuitry and supply voltage leves (4191 -53v against 4192 -52.5).
 
stk voltage

Hi,

Does any one know what should be the normal working voltages on pin no 12 of STK4192 if the supply voltage +vcc is 37 v and -vcc is -37 v ?

The voltage I measured on pin no 12 is almost zero. Is it normal ? If not normal then what could be the problem ?

Thanks
 

Mooly

Administrator
Paid Member
2007-09-15 8:14 am

Mooly

Administrator
Paid Member
2007-09-15 8:14 am
Never seen insulators used on commercial gear. Pin 16 is shown as "ground" so I'm guessing that connects to the metal back plate which may or may not be "grounded".

The IC probably is duff and may have blown circuit protectors (fuses etc) in the PSU, hence no supply on pin 11 etc.