Posted by Tnuctipun [ 64.12.116.132 ] on February 26, 2005 at 18:08:19:

In Reply to: Adjusting R3 posted by colinhester on February 26, 2005 at 13:21:42:

Hey-Hey!!!
For this you ignore the mu output. Put the ammeter or sensing resistor in series with a 9V battery. + to the upper drain and - to the plate end of R-3. Watch the meter and adjust until the CCS is passing the 15 mA of current.

If you use a sense resistor, use Ohm's Law to determine curent. If you use the mA function then you'l get the reading directly. It will probably come in when R-3 is ~150R or so.

Call if you wish, I will talk you through it.
regards,
Douglas

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