Pyramid PSV500 Universal Compact 50 Amp Adjustable 12 to 15 Volts Output Home Bench Power Converter Supply, with 2 USB Ports and Overload Protection

The Pyramid PSV500 50 Amp Power Supply is a great product. I use it to power my amateur radio equipment. It has both an Ammeter and Voltmeter and the output voltage is adjustable from 12 to 15 Volts DC. It has two sets of binding posts as well as two 5 volt / 2 amp USB sockets. A great value for the price.

This is my second Pyramid bench power supply. The original powers a Kenwood HF with 30amps. This addition at 50amps will be able to power two (2) mobile Ham radios in the house with adequate power for other little draw items if needed. As a bonus, this unit also has two USB ports at 5v 2amps, (digital gateway?). Probably the best thing is the price for the quality. I know when my hopes and desires lead to more transceivers requiring stable regulated power, another Pyramid desktop power supply will be in my cart. This one took only three days for delivery!

It was so long ago, I forgot whether the unit lost voltage or amperage first but once it started 3-4 months after purchasing, the decline was rapid. I do remember measuring the output when I first received it, and it was surprisingly accurate as to what the needle meters displayed vs measured amps/volts on my multimeter. Also recall it being unusually loud, but it handled a 25-ish amp load.Since it was now broken, I decided to open it up and see if I could possibly replace any burnt components or maybe find connections that needed to be re-soldered. Discovering what I confidently can say as the worst quality PCB I've ever seen in my life, I'm thankful my house didn't burn down. Now seeing pictures of other reviews, I'm certain quality control was being unknowingly tested by the first group of consumers and as units kept selling, problems were discovered, and alterations were made as time went on.Anyway, I'm pretty sure the Power Supply was the main culprit. I removed it a couple years back and never got around to finding a replacement until now. Has anyone had any luck with fixing a broken unit?Pyramid, please send me a new and updated unit and I will remove this review.

The unit arrived in really nice packing with plenty of foam to protect the knobs and switch.It works, and it doesn't over heat with regular power draw of 20+ amps.The fan is quiet when it runs.The Amperage and Voltage displays are helpful. They are also accurate, according to my meter.According to my volt meter, you can adjust it from 12 to 16 volts. The meter on the power supply matches.I use this to run some CB radio and Ham radio equipment at home. I regularly need 20+amps of power and it delivers without noise or heat issues.I've owned pyramid power supplies before, and I'm having success again.

this power provide constant voltage and current and it stable. however, for ham radio rfi is trerrible and i dont recommend for ham radio

The product states that it is a linear power supply in the title. It is a SWITCHED power supply, as is mentioned in the description. My inexperience made me miss this, and this product is near-useless for me.Like all switched power supplies, this product generates a fair amount of RF noise. If using this product for ham radio, this noise appears as peaks throughout the RF spectrum. This causes interference on certain frequencies, rendering those frequencies mostly or entirely unusable.Switched power supplies sometimes feature noise suppression, or a "noise offset" that allows you to move this interference off of a desired frequency. This power supply does not have these features. On its own, it is a poor choice for ham radio and other RF-dependent purposes. The "linear" descriptor is meant to mislead, and make this product seem like a good choice for these purposes.As a bench power supply, this would probably work fine for most applications. The USB ports are convenient, and two sets of output studs are nice to have. The dual analog meters and the adjustable voltage are also useful.As it is, the deceptive product title would make me pass on this product for any purpose. Don't be fooled like I was.

There was a small dent in the casing due to shipping, no fault of the company. The PSU works great, very quiet unless you really push it and get the fan going.It would be nice if the meters were back-lit but they don't seem to be (unless mine is busted?). I figure I can tie into the 5V right there going to the USB ports and add my own LED.Overall though, great little power supply, works perfect.

I received this 50 amp 12-volt DC power supply today. It's an attractive piece of equipment. I really wanted to use it with my Icom HF ham transceiver but it produces an excessive amount of noise on several HF bands and 2 meters, as well. In a setting where it's not used to power communications equipment it would do well. But I have decided reluctantly to return it and buy something else. I have switching power supplies from other companies and they are very quiet. But this one isn't. Note: the connectors are on the front. I am not a fan of that feature but was willing to live with it if the supply worked well for me. It didn't.