2E26
951
11
4
All of these parts came in a plastic bag stuffed with bubble wrap. The IRF530 transistors came with no ESD protection. I may end up using those in a low frequency inverter and buying new IRFs for this build.
What comes installed on the board is bias circuitry and a PTT switch. C4 and C5 (the diagonal chip capacitors) are feedback capacitors for the amplifier transistors. IC1 is a 5 volt regulator and Q1 is a switch that turns on the relay and bias circuitry.
The smaller parts with holes will be punched out and used to form the transformers. Brass tubes form a single turn winding for high currents while wire wound through provides the secondary.
Length of the board is 4 inches / 100mm
Width of the board is 2 inches / 50mm.
Arcygenical
As a Class A/B linear amplifier, make sure to invest in a GOOD quality 1.5mm thermal pad to heatsink the bottom of the board to your HS. I've also had great results taping off the bottom of the board, and filling in the air gaps between the input and output stages and other separations with a very hard epoxy. Look for anything rated 7H or higher. Really does let you get the full 50+w output from a board like this.