The GB150S2 is a compact power supply module specifically designed for use with 2 x GB150D power amplifiers as a shared supply. It features 47,000uF of supply capacitance comprising 5 paralleled 4,700uF 63V electrolytic capacitors on each +/- V supply for lower paralleled ESR and ESL over larger single alternatives. A 10A 400V bridge rectifier is onboard as well as bleed down resistors and film bypass capacitors. A 5 way terminal block is provided for the Vs+,Vs- and 3 connections to a local low noise star ground. The PCB is double sided 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.

The long narrow shape is to facilitate the running of short supply to module wiring for lower supply impedance a common limitation on ultimate performance. The module takes wiring centrally from a single CT or dual winding transformer and outputs to each side.

 

150s2.jpg
 Output
up to +/-63V max
 Ripple
150mVrms at 1A / 100Hz
 Bridge
10Amp rms
 Capacity
+/- 23,500uF @ 63V s
 Drain
2mA at 55V on each
 Dimensions
160mm x 50mm x 55mm
The 10 main filter capacitors are 25mm diameter so the PCB may 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 blocks will receive wires up to 2mm diameter.