How to choose the right radio power supply?

So to simplify the process, here are some general guidelines for choosing the right size power supply for your radio. Use the manufacturer’s amp rating of the radio as the rule. Use the maximum, or peak load rating of the radio, not the standby or typical draw.

What kind of power supply does a battery valve radio need?

Power Supply for Battery Valve Radios A number of visitors to this site have asked about power supplies for operating battery valve radios from the mains. Many later radios use four 7-pin valves and require a 90V HT supply at typically 12mA and a 1.5V LT supply at 125mA or 250mA depending on the valves used.

What was the bias supply on a radio called?

The bias supply, if there was one, was called the C supply. If a different high tension was required, the higher one was called the B++ or B1, and the lower one was called the B+ or B2. One way to approach power supplies, is to look at the subject historically and follow the developments of domestic mains power and how the radios adapted.

Can you get a cheap power supply for a ham radio?

Many Hams are under the (wrong) impression that they can go cheap on them. However, you run the risk of ending up ruining your entire system or set-up with a cheap, poor quality power supply.

How does a power supply work on a radio?

The power source available, and the valves that are fitted, will determine the power supply. There are many variations. The radio power supply must convert the locally available power, to a high tension for the valves, and a low tension for the filaments/heaters, and sometimes a bias supply as well.

Which is the best power supply for a ham radio?

The TekPower TP30SWII is another highly rated power supply for HAM radios on the market. At 13.8V and 30 amp DC, it’s good enough to power all types of HAM radios out there.