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Part Number: OPA2132
I need to replace the operational opamps in my amplifier due to transistor failure, and --54v went through -17v rails.
DC Servo circuit is below its a new class at Technics SU-V9 from the 1980s. The old part was AN6552 which is gone and modern replacement is RC4558 (voltage is 15+/-). But maybe the OPA2134 or OPA2132 or a better suited Opamp for the circuit would be best
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Precision Amplifier Applications - TI Tucson
In reply to Alexander Davis:
Thank you for the help and advice. The RC4588 would be great, using that with the load comparator opamp.
Thank you for the help and advice. I would prefer to upgrade so the OPA1678 as you suggested sounds great, and that it can be used in the circuit without going unstable.
Great, as i do have though maybe past their shelf life Jan 2017 in a sealed bag from Mouser OPA1642 , three of them so enough for the tone opamp and phonostage. I will get the adaptors them .
Thank you again Alexander and Kai
In reply to Sam Macdonald:
In reply to kai klaas69:
Phono opamp is close with 47uf to ground for pin 4 and 8. DC Servo - bipolar caps with diodes for pins 1,2 and 5 and 7. R379 is relatively close as is R381. So they should be fine or need resistors or bypass caps ?
Also are my batch (3 OPA1642) in a sealed bag from Mouser 1Jan 2017 still okay if shelf life on bags says 12months?
Both you and Alex have been great help , thank you again
In reply to Dennis Goeke:
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