BATTERY BOOSTER
During the evolution of Amateur electronic gear the power source has evolved around the automobile standard of 13.8 volts . And typically the tolerance has been set at + or - 15%. This is OK if the engine is on. One further complication is that the specification does not include the cable drop of 1 to 2 volts.
So when the engine is turned off the battery drops to 12 volts. Now 15% off of 13.8 leaves only 11.7 and another volt drop for the cable leaves 10.7 volts to run the radio. The radio is not specified to run at this voltage.
So what is needed is a car type power supply, just like at home that always puts out 13.8 volts. Hence the Electronic Battery Booster. Now if you take your radio out of the house and put it in your car it will give the same output, just as if it was connected to the power supply in the house.
Leave a comment