Forge Power Kit — 500 W Modified-Sine Inverter (SG3525)

Every stocked part for the Forge reference design: SG3525 + LM358 driver board, six IRF3205 MOSFETs, bulk capacitors, low-battery relay and voltage sensor, PC817 feedback opto, blower fan, fuses and prototyping board.

Kit contents

• 1 × SG3525 with LM358 inverter driver board (PW-3056)
• 6 × IRF3205 MOSFET, 55 V 110 A (CMP-2715)
• 4 × 1000 µF 50 V electrolytic (CMP-1944)
• 1 × 5 V 1-channel relay (low-battery interlock) (MDL-2301)
• 1 × Voltage sensor module (battery, for the interlock) (PW-3215)
• 1 × 12 V 5015 blower fan (EM-1995)
• 1 × Fuse assortment kit (PW-2658)
• 1 × Dotted veroboard 12×18 cm (PRT-2587)
• 1 × PC817 optocoupler (feedback isolation) (CMP-2896)

Not included

500 VA 12-0-12 V / 230 V laminated transformer, 60 A fuse and holder, 10 AWG cable, heatsink, gate resistors, case and socket.

The full build guide — block diagram, wiring, why-these-parts, gotchas and safety — is the modified-sine-inverter-sg3525-500w reference design in Forge: forge.microscale.net/design (ask for it by name). Print the enclosure with Forge Prototype.