I collected these circuits from many sources for a long time, electronic books, databooks, magazines, newspapers, manuals, etc. Some were tried, others were collected from comercial consumer products, and some from my experiences. I hope that it could be useful for us, as it was for me.
1. Dimmer Lamp (01/20/1994)
5. Voltage Adapter for 1.4 Volt Device (1984)
1. Dimmer Lamp (01/20/1994)
- Many of dimmers circuit was sold in the market. Here I cracked one of it.
- A solar cell radio used a 3V (or two 1.2V) Ni-Cad battery in it. The battery can not be removed. It use a mini jack socket for charging. Its quiet difficult to find such a voltage charger. Here is the circuit to convert the voltage from the general power supply. I already made the circuit (Resource : Elex magazine).
- The fan circuits from many products that I ever collected.
- A car voltage generally is 12 Volts. How about when you want to connect non 12 volts devices into your car? The circuit here is the solution. Even the circuit is design for a car apppliance, it does not seem it can't be used for another purpose (Resource : ETI magazine).
5. Voltage Adapter for 1.4 Volt Device (1984)
- Sometimes you need a non specific circuit like this.
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