BigE4u
New Member
https://www.bit-tech.net/modding/2002/06/22/knight_rider/2 ... granted this was posted back in 2002 and i find that LM4558 dual opamp IC shown is no longer in production. So my question is this, could i substitute it for a LM1458 chip and instead of using the shown 1/2w metal film resisters, could i substitute them for 1/2w carbon type? thanks