Same thing could happen i had used a 5v output rated transformer.
220v to 5v power supply.
Voltage isolation ac85 265v wide voltage input.
The design of 5v dc power supply.
The voltage regulator will constantly supply 5v provided that the input is above 5v.
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The design of any circuit begins with a well made general block diagram.
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It helps us to design the sections of the circuit individually and then at the end put them together to have a complete circuit ready for use.
The power supply for the isolation module power with temperature.
There are different types of power supply circuits based on the power they are used to provide for devices.
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12v to 5v converter using lm7805 ic power supply afzal rehmani 1 062 views 8 months ago so ever wondered how come some circuit takes a 12v input but is internally driving led s microcontrollers and other low voltage peripherals which are not even designed for such a high voltage.
Your transformer s output also depends on it s input.
If the input is above 220v the output must be more than 12v and if the input is lower than 220v the output must be lower than 12v.
For example the micro controller based circuits usually the 5v dc regulated power supply circuits are used which can be designed using different techniques for converting the available 230v ac power to 5v dc power.
You can also choose from 12v 24v 220v ac to 5v dc power supply as well as from 5v 1a 5 1v 2a and 3 5v 2 4a 220v ac to 5v dc power supply and whether 220v ac to 5v dc power supply is 1 50w 500w or 101 200w.