New Power Supply- New Instructions
nlatta at stanford.edu
Fri Sep 2 11:10:22 PDT 2011
After many hours of work and head scratching Jim McVittie has installed
a new RF power supply that will go to full power and tune nicely. There
are, however, new instructions for turning on and tuning the power
supply. Please see below. The instructions will be posted on the
etcher and noted in the operation instructions at the tool. This may be
a temporary state as we may be ordering a newer more powerful RF power
Turn on POWER on the RF power supply.
The following buttons should be on;
The following buttons should be off;
When the plasma is on RF ON should be lit.
When the plasma is off RF should be lit.
Adjust the coil pot only.
Use the bird meter (located above the tuning pots). Make sure the arrow
is pointing left.
The old black box on the loading station may be used for gross tuning.
The most accurate froward and reverse power readings are on the power
Write down the numbers on the coil and cap pots so that you can get
close to perfect tuning the next time you use the etcher.
More information about the drytek2