Hello AAC members,
I am designing low cost circuit for controlling AC-powered appliances with a very small micrcontroller.
For that I have designed the power-supply circuit which converts 230V AC to 5V DC.
The circuit works fine in Proteus Simulation.
But when I tried on actual circuit , the output before connecting the 7805-IC is 8.5V DC, however when I connect 7805 to the circuit , the voltage at input of 7805 suddenly drops to 2-3V and thus output at 7805 will be 0.2-0.3V.
So I need help what is the issue that causes voltage drop at input of 7805 when it is connected ?
Also at the output of 7805, I want to drive the small controller , so is there any other possibilities that it will go wrong ?
I am designing low cost circuit for controlling AC-powered appliances with a very small micrcontroller.
For that I have designed the power-supply circuit which converts 230V AC to 5V DC.
The circuit works fine in Proteus Simulation.
But when I tried on actual circuit , the output before connecting the 7805-IC is 8.5V DC, however when I connect 7805 to the circuit , the voltage at input of 7805 suddenly drops to 2-3V and thus output at 7805 will be 0.2-0.3V.
So I need help what is the issue that causes voltage drop at input of 7805 when it is connected ?
Also at the output of 7805, I want to drive the small controller , so is there any other possibilities that it will go wrong ?
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