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What happens if you put two different voltages together?
Putting two power supplies of different voltage together is an even more terrible idea. Either the lower voltage supply shuts off (and is useless) or it sinks current. If it is designed to sink current, it will reduce the available current from the higher voltage supply.
When do you need a multiple voltage power supply?
Power Supply circuits can be extremely useful when you are working on a project which requires multiple range of input voltages. Building a dedicated power supply units for each of those can be painful and tedious process.
How are voltages Created in a series circuit?
Voltages in Series. The battery of a circuit provides energy for the charge to pass through the battery and to create a potential difference among the ends of the external circuit. Now, if we assume a cell of 2 volts, it will create a potential difference of 2 volts across the external circuit.
How many voltage ranges are used in a circuit?
Generally when dealing with electronic circuit five voltage ranges are very commonly used 12, 9, 6, 5 and 3.3V .So we are going to build a single power supply circuit which gives all these output voltages and can be changed using a simple rotary switch SW1.
What happens if I connect two current sources?
The straightforward way is that (from basic electrical engineering circuit analysis by David Irwin) “a series connection of current sources or a parallel connection of voltage sources is forbidden unless the sources are pointing in the same direction and have exactly the same values.” This is undefined.
Is it possible to connect two power supplies?
It is not possible to connect two supplies with a common ground in series. Whether series or parallel, either way is a REALLY BAD IDEA. Any questions? In parallel, your overall voltage would be +12V. Your +5V feed will be being over-powered by +7V. You will probably be doing damage to the internals of your power supply.
What happens if I connect two switching supplies?
With two switching supplies though, as W5V0 has noted, the resultant voltage will likely be the higher of the two, as the lower rail cannot sink current (due to the diode) and will effectively look high impedance to the 12V rail. So all that should happen (see below) is the lower rail will rise to the potential of the higher rail.