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Reviews For: SGC PS-50 Power Supply

Category: Power Supplies

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Review Summary For : SGC PS-50 Power Supply
Reviews: 3MSRP: 459.40
Unregulated 14 volt power supply recommended for use with the SGC SG-500 amplifier.
Product is in production
More Info:
# last 180 days Avg. Rating last 180 days Total reviews Avg. overall rating
9V1VV Rating: 2008-07-07
Overpriced Time Owned: 0 to 3 months.
You can get 60 amps up to 15 VDC by paralleling two Diamond GSV-3000 amps, it is cheper by $150.

To prevent one supply from grabbing the load, use a 0.1 ohm ballast resistor in series with each PSU and common to the load. You can make the resistors by winding 30 feet of 14 awg copper wire on a two-inch air former, like an HF coil.
WH6OR Rating: 2007-05-05
expensive/insufficient output for intended use. Time Owned: 6 to 12 months.
I have used this p.s. as the recommended power source for the SGC sg-500 amplifier. It works a point. At about 300-350w. out, the amp draws down the p.s. voltage to the shutdown point of the linear. To get 500w. out, an additional power source is required. Tremendous engineering oversight in my view. It seems this is a prevalent issue for others as well. It's cost puts it out of the range of "good value". It runs cool, and quiet. Best I can do is a 3.
KG5JJ Rating: 2003-12-07
Power Supply for the SGC SG-500 Time Owned: 0 to 3 months.
This power supply is actually 4 individual power supplies parallel in one case. It is the only power supply (besides a battery) recommended to power the SG-500 amplifier, as it is unregulated and does not suffer "RF in the shack" undesirable operation.

It is extremely well-built, but two of these supplies in parallel are recommended for 500 watt CW or digital modes, unless you want to "float" a marine battery in parallel with one power supply.

It (battery) will have to be switched in and out of the circuit when needed, as the resting voltage of the power supply will quickly charge (and possibly overcharge) the battery.

This will require a "dedicated" smart charger to recharge the battery, and then turn-off, until the charger senses to recharge again.

I'm using a marine battery smart charger for this purpose. The supply may be wired for 110 or 220 operation, but it needs a "stiff" 110 volt supply because of the current required, if 220 is not available.

I gave this supply a 4 out of 5, because it is expensive, for an unregulated supply.

73 KG5JJ (Mike)