Technical Information
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AM Basics & Station Setup
Class E Overview and Theory of Operation
Output Circuit Values & MOSFET ratings
High Power & Harmonic Reduction
Device Protection
Testing & Tuning Procedures
Modulators & Power Supplies
Design Tools
Construction Projects
Construction Overview
Simple 400 Watt RF Amp for 80 meters
VFO for 160 & 80 meters
Using a lower power transmitter as an RF source (A to D converter)
Pulse Width Modulator and power supply
24 MOSFET RF Amplifier - Step by Step
Analog Modulator (Class H) and power supply
Overall Schematic of a complete modulator/power supply
Class E Kits and Parts
Technical Support
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Where to get parts
I have a list of parts sources for class E transmitters. The parts
for these transmitters are generally available from common, reliable
sources such as Mouser, Digikey, Future Electronics and Newark Electronics.
There are also numerous surplus outlets which have parts from time to
time. Also check the List of sources of parts
for more information.
Parts that I currently have:
MOSFETs
Driver ICs
Transistors
Damper Diodes
Power Transformers
PC boards / parts kits
These kits consist of PC boards, and optionally, all parts for the boards.
Both PWM and class H modulator kits are available. Both the PWM and class H
modulators interface to the Overload Shutdown / Efficiency Meter board, and,
except in very special applications, the Overload / Efficiency Meter board
must be used to protect the modulator and transmitter from damage in the event
of an overload.
Note: Ordering and Payment information is located at the bottom of this page.
- PWM Boards and Parts
- Boards Only
- PWM Generator Board Only: $20.00
- PWM Output Section Board: $20.00
- Overload Shutdown / Efficiency Meter Board: $20.00
- Boards and Board Parts
- PWM Generator Board with all board parts. Includes a 6 pole, flat to 5.7kHz (3dB corner at about 7kHz) anti-aliasing filter as shown on main PWM generator schematic: $50.00
- PWM Output Section Board with all board parts - minus the output MOSFETs and Damper Diodes: $50.00.
Populate this board with output MOSFETS / Damper Diodes for the desired power level. Up to 250 watts per modulator MOSFET / Damper Diode pair.
- Overload Shutdown / Efficiency Meter Board with all board parts: $60.00
- Combined PWM Board Sets
- Combined PWM Board Set (3 boards listed above) with all board Parts: $150.00
- Class H Boards and Parts
- Boards Only
- Class H Board Only: $20.00
- Overload Shutdown / Efficiency Meter Board: $20.00
- Boards and Board Parts
- Class H Board with all board parts: $60.00
- Overload Shutdown / Efficiency Meter Board with all board parts: $60.00
- Combined PWM Board Sets
- Combined Class H Board Set (2 boards listed above) with all board Parts: $120.00
- Other Boards:
- Microphone Preamp / Equalizer / Compressor Board Only: $15.00 (I no longer have parts for this board)
Shipping / Packing for Boards and Kits of Parts
- Individual Boards (boards without parts): $4.00 for 1 board, $2.00 for each additional board.
- Individual Boards and Parts together: $6.00 for 1 kit, $3.00 for each additional kit.
- Combined Board and Parts sets: $8.00 for each combined kit.
- FQA11N90 MOSFETs for RF Amplifiers: $4.00 each
- IRFP250n MOSFETs for PWM and class H modulators: $2.50 each
- BUF420AW Bipolar Transistors (for Class H Modulators): $6.00 each
- DSEI30-06a Ultrafast Diodes (600 volts / 30 amperes): $3.00 each
- IXDD414 14A driver IC - TO220-5 Package: $4.00 each
Shipping / Packing for MOSFETs, Transistors and Diodes
- $4.00 up to 15 devices, $5.00 up to 20 devices, $6.00 up to 30 devices.
88VAC @ 5.5 Amperes, Weight 12 lbs - $24.00 plus shipping/packing (varies,
contact me).
I can accept money orders, checks or Pay Pal.
My Pay Pal account is: My mailing address is:
Steve Cloutier
79 Tyler Road
Townsend, MA 01469
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