DRSSTC Bus Supply V2
author: dewhisna
2 layer board of 5.41 x 6.01 inches (137.3 x 152.6 mm)
Uploaded:
April 05, 2019
Shared:
April 05, 2019
Total Price:
$162.30
Dual-Resonance Solid-State Tesla Coil 340VDC Bus Supply (from 120VAC only).
This version is designed to be used with large electrolytic capacitors, such as Cornell-Dubilier 500C series screw-terminal mount. The prototype circuit is using two 10,000uF 450VDC Cornell-Dubilier 500C series capacitors. Or optionally, you can use the DRSSTC Bus Caps V2 board to mount smaller, through-hole, bus caps to this board using 710-7461097 : Würth Terminals WP-BUFU Pin-Plate 16Pin Bush M6 180A.
This new version allows for either a circuit-breaker or a fuse, and has a completely redesigned digital soft-start circuit to suppress the inrush current at startup, but doing so without the extreme heat of an always in-circuit NTC component. It also switches to heatsinkable through-hole parts for the main diodes at a 30amp rating instead of 15amp.
NOTE: While this design works great as-is, depending on the size of your capacitor bank, consider bumping R18 from 100K up to 150K or so for a longer soft-start charge time.
This design replaces the older DRSSTC Bus Supply V1 version.
Dual-Resonance Solid-State Tesla Coil 340VDC Bus Supply (from 120VAC only).
This version is designed to be used with large electrolytic capacitors, such as Cornell-Dubilier 500C series screw-terminal mount. The prototype circuit is using two 10,000uF 450VDC Cornell-Dubilier 500C series capacitors. Or optionally, you can use the DRSSTC Bus Caps V2 board to mount smaller, through-hole, bus caps to this board using 710-7461097 : Würth Terminals WP-BUFU Pin-Plate 16Pin Bush M6 180A.
This new version allows for either a circuit-breaker or a fuse, and has a completely redesigned digital soft-start circuit to suppress the inrush current at startup, but doing so without the extreme heat of an always in-circuit NTC component. It also switches to heatsinkable through-hole parts for the main diodes at a 30amp rating instead of 15amp.
NOTE: While this design works great as-is, depending on the size of your capacitor bank, consider bumping R18 from 100K up to 150K or so for a longer soft-start charge time.
This design replaces the older DRSSTC Bus Supply V1 version.
