I am looking for close replacement.
Need help finding replacement for dip-8 dual op amp pm93BH
ic from unit controls cooling and heating unit made by honeywell
main ac supply to cooling/heating unit is 24vac split +12 and -12
only markings on IC dip-8 pm93BH with national Instruments logo
no Google entries and no datasheets
It is a DIP-8 low dual op amp
supply VCC is 20 VDC need to handle approaching 28vdc
looks like Tl062, TC072, Tle2072, ca1458, lm353, lm258 and Tl082 pin layout (from linear ic tester BK Precision )
Looking at the component with a huntron tracker 2000
vcc to ground like a zener but at high range to top of the zener cut off like diode
inputs to output from IC all look like diodes on all ranges
I am looking for close replacement
op amp outputs connect each to the coils of two separate relays
relay Midtex 603-772sy 3amp 240vac
Thanks for any help