1 x single 1M Linear Pot-1/2 Watt
(Dual is only needed for fixed Bias version)
10R-5 Watt (Optional.10R>20R-will protect Mosfet from overload.)
47K-1/2 watt
10K-1/2 watt
!2v Zener-1/2 watt
Ln4007 Diode
N-channel power Mosfet NTE2377 / IRFPE50 or any equivilent.
(Any mosfet with: High voltage rating 800+
: High current rating 8 Amps+
: Power dissipation 100 - 150Watts
: Low Rds- less than 5R and Vgs(th)~3V
Use the IRFPE50 datasheet as minimum values and choose
similar or higher valued ...The NTE2973 is a higher powered example)
For the Fixed Bias Version:
All of the above,but change the single 1M for....
1 x Dual 1M Linear potentiometer-1/2 watt
And add...
10k-1/2 watt
47k-1/2 watt
12 zener -1/2 watt
P-channel Mosfet IRF9360 or equivilent
(Any mosfet with: Med voltage rating -100
: Low current rating 1 Amps+
: Low Rds- less than 10R
Look at the IRF9360 datasheet and choose...)
If you need a Trim pot a 470K lin pot 1/2 Watt will do.
Here is the INSTALLATION PROCEDURE and Schematic DESCRIPTION