Sage-Tips

How many volts does it take to run a radio?

So this was all before transistors were readily available. So it was 0 to 100 volts depending on the design. Now Transistorized radios can work on 1.2 to 3, 6, or 9 volts. And of course for cars, many take 12 VDC.

Do volts matter in batteries?

A higher voltage battery has the potential to “push” more current–that is, more electrons–for a given resistance. This translates to the capacity for greater work, which is the same thing as more power. Higher voltage also means less current to do the same amount of work, so longer battery life.

How many Volt is radio battery?

A batteries were initially 2 volts, being lead acid accumulators, but with the introduction of all dry battery radios, 1.4 volts became more common. Other voltages can be encountered. For example, 7.5 volt batteries were sometimes used to power a series connected set of 1.4 volt valves (tubes).

Does volts mean more power?

Volts and Amps As long as you can draw enough current (amps) from the battery, you can get the same amount of power out of many voltages. So theoretically, the higher voltage doesn’t mean more power in and of itself. Voltage numbers like 40V, 80V, and 120V often represent peak (max) volts.

How many volts does a car speaker need?

Making Power for Your Speakers For standard 4-ohm speakers, it takes a peak-to-peak voltage of almost 60 volts to deliver about 100 watts to your speaker. In most amplifiers, this voltage is configured as +30V and -30V, relative to the ground reference voltage of your vehicle chassis.

What power supply do I need for ham radio?

To begin with, all HAM radio systems operate on 13.8-volt power. However, the amperage varies widely between different systems. The higher the amperage, the more powerful your signal will be. If you’re using a small, handheld receiver, you can just use the built-in battery.

How many volts do I need?

Step 2: Determining AC Requirements If the device is AC powered it will typically require around 120 volts or 220 volts, depending on what country you live in. All of North and Central America use 110 to 130 volts, while most of Europe and Asia use 220 to 240 volts.

How many volts should a car speaker have?

You probably know that car audio speakers generally have lower impedance than home or commercial speakers. As you know, there is a limited amount of voltage available in an automobile (approximately 13.8 volts). This means that head units have only 13.8 volts to apply to the speaker leads.

How many volts does a car amp need?

For starters, your car amplifier is meant to receive its voltage from a 12 volt DC source which is your car battery. Common households use approximately 120 volts AC. So you can see that we two problems. The first is that we need 12v and not 120v, if this was the only problem it wouldn’t too hard to solve.

Are volts or amps more important?

As important as amps and volts are when considering on which you should place more emphasis, is the use. If it’s hanging curtain rods, low amp and low voltage should serve you well. If it’s for big indoor and outdoor projects, higher voltage and lower amperage could be the best bet.

How much voltage goes through a speaker?

Speaker wires carry whatever level of voltage that comes out of the amplifier they are connected to. For a 100-watt amplifier that is driving an 8 Ohm speaker, the voltage that will be transmitted through the speaker wires would be about 30 volts. This voltage is entirely dependent on the power rating of the amplifier.

Can you replace a 12V battery with a 9AH battery?

In our example, a 12V 7.2Ah can be replaced by a 12V 9Ah for longer run time, but the battery must be 12V. How long do SLA batteries typically last?

Where does the 24 volts come from in this circuit?

Answer: The 24 volts comes from a low voltage transformer. Please see the pictures of the two transformers below. The transformer has a primary (high voltage side) and a secondary (low voltage side).

Why is my 24 volt contactor not getting 24 volts?

If the contactor is not getting the 24 volts to the contactor coil then it could be a time delay relay (if the unit is equipped), thermostat problem, transformer, safety control (low on refrigerate), or wiring problem.

Can I use a 12V 5AH battery in the alarm system?

There’s absolutely no problem using a 12V 5Ah battery in the alarm system. There will be no damage of any kind to the alarm system. The slightly higher amperate will result in a longer up time for the alarm when the power fails. Can my electric scooter use regular sealed lead acid batteries?