Here are a couple of front-end PSUs I drew up. The first is an adaptation of a Jam Somasundram cMultiplier, while the second is an adaptation of a Pete Millet shunt regulator.
My BA incarnation runs at 50V with a 13mA CCS for the LTP and a 35mA CCS for the VAS. They make up the bulk of the front-end load which varies from 51mA to 57mA.
The cMultiplier has much lower ripple and runs cooler. The shunt regulator has better immunity to load variation.
My BA incarnation runs at 50V with a 13mA CCS for the LTP and a 35mA CCS for the VAS. They make up the bulk of the front-end load which varies from 51mA to 57mA.
The cMultiplier has much lower ripple and runs cooler. The shunt regulator has better immunity to load variation.
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