Hi,
I am trying to build a transformer less power supply.The input of the power supply is 230Vac.The power supply must have two outputs, one output to charge a lithium ion 7.4v 2600Mah battery pack and the second output to drive a 6 to 8v micro-controller that will drive a 3.2v 700mah high power led. This power supply will be constantly connected to the 230Vac supply. So the charging part of the circuit needs to switch off after charging and on when charging is required.
The control circuit needs to work with a input voltage of 6 to 8v. It must be controlled by a laser to switch off/ on the LED as well as dim the LED. This control circuit must only when there is 230Vac present.
The second control circuit will work the same, but will drive a 3.2v 300mah LED and the input of this circuit will be from the battery. This circuit must only work when there is no 230Vac input.
If the two control circuits can be combined using one LDR, that would be fine.
Please assist me with this circuit as I have tried to build some circuits from the internet but non of them have the functions I require.
Thank you
I am trying to build a transformer less power supply.The input of the power supply is 230Vac.The power supply must have two outputs, one output to charge a lithium ion 7.4v 2600Mah battery pack and the second output to drive a 6 to 8v micro-controller that will drive a 3.2v 700mah high power led. This power supply will be constantly connected to the 230Vac supply. So the charging part of the circuit needs to switch off after charging and on when charging is required.
The control circuit needs to work with a input voltage of 6 to 8v. It must be controlled by a laser to switch off/ on the LED as well as dim the LED. This control circuit must only when there is 230Vac present.
The second control circuit will work the same, but will drive a 3.2v 300mah LED and the input of this circuit will be from the battery. This circuit must only work when there is no 230Vac input.
If the two control circuits can be combined using one LDR, that would be fine.
Please assist me with this circuit as I have tried to build some circuits from the internet but non of them have the functions I require.
Thank you