The GB500S is a compact power supply module for use with one or more amplifiers up to total 500W. It features 47,000uF of supply capacitance comprising 5 paralleled 4,700uF 63V electrolytic capacitors on each +/- supply, for lower paralleled ESR and ESL over larger single alternatives. Four high-speed dual diodes make up two independent 16A bridges for +V and -V supplies. Incoming AC filtering, bleed down resistors and DC output film bypass capacitors are included. A 6 way terminal block is provided for the Vs+,Vs- and 4 connections to star ground. The PCB is double sided copper clad and through hole plated, with clearly marked component placement guide and connection labelling, and is designed to isolate input side charging spike offset currents from sensitive star ground output points. Isolated 3mm mounting holes are provided.

Modules may be operated as satellite RC filtered local supplies by replacing the bridges with suitable resistors, to operate independantly from a main supply, providing lowered supply ripple and harmonics and isolation from supply-borne crosstalk. The 10 main filter capacitors are 25mm diameter allowing the PCB to be used with alternatives of the same footprint, if purchased bare and will accept the latest 10mm pin spaced snap fit types. The 5 way terminal block will accept wires up to 2mm diameter.

A +/-100V GB500S-HV is also available for use with transformers to 120Vac CT, or 2 x 60Vac.



up to +/-100V max
150mVrms at 1A / 100Hz
16Amp rms, 200A surge
+/- 23,500uF @ 100V s
4mA at 90V on each
98mm x 79mm x 55mm