Woah a hand drawn schematic by Spec himself? you must be on holiday?
no, just too lazy to put the circuit into EAGLE.
I might be overlooking something? But I started drawing up a schematic in eagle to include your CC circuit. Is it correct the opa2129 has only 3 pins used??
Yes, plus the -V and + V supply pins. The OPA2192 has the same pin-out as the ubiquitous LM358 and, in terms of functionality, is the same, in that it comprises two opamps in one package. Connect the +iP and -IP of the spare opamp to opposite supply rails- it does not matter which way around.
I see in your drawing you've got the supply volts and GND with a cap across the opamp.
Invariably you should decouple all chips with a high frequency, low equivalent series resistance (ESR), capacitor. A 100nF disk ceramic X7R dielectric capacitor is good default decoupling capacitor for low power chips, but not for low distortion applications like audio amplifiers. In analog engineering you very often hear the term 'one hundred nan to deck'.
Decoupling capacitors must be mounted as close as possible to the integrated circuit pins and must have as short as possible leads. If you have + and - supply lines you need two decoupling capacitors, one between each supply line and 0V.
Incidentally, an LM723 linear regulator chip needs a default decoupling capacitor across its supply pins.
It is often thought that decoupling capacitors are a kind op optional luxury used by pedantic engineers, but that is not true. Decoupling capacitors are essential for the correct operation of a circuit.
And I'm unfamiliar with the term "ORI" above one of the resistors?
Me not thinking. On schematics it is conventional to use the multiplier as the decimal point. So in this case 0R1 stand for, 0.1 Ohms. By the same token, 2.2 Ohms would be written 2R2 and 470 Ohms would be written 470R.
Things get a bit complicated with high value capacitors. For example 10,000uF should be written as 1mF (one mili Farad) and 2.2 nano Farads would be written as 2n2F, which is the same as 0.0022uF or 2,200pF. It is all quite simple, once you know.
P.S I tried the LVD circuit, something went fizz pop bang, and it was the TLV IC. Haven't ruled out the PCB might have a construction error. Or perhaps I heated up the TLV too much during soldering,
Just the other day I was given a Pace MBT SV-4 rework station so no excuses for not soldering SMD components now!!
spec