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.(or Solar cell) It circuit cause […]
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We can increase the DC voltage from 6 volts to 12 volts. Or from 12 volts to 24 volts with a simple model of The DC to DC step up converter circuit with use TDA2005 or TDA2004 as main. This circuit is similar to Simple DC to DC step up converter using TDA2822. We use […]
This stop current give battery, when Voltage of battery tall arrive at the level that load with full speed already ahead for protect something charger too much poor distilled dry water. This circuit can is usable very wide can use with battery many model. By choose diode and SCR at can durable the trend loads […]
This is simple automatic water level controller circuit. It will make you more comfortable Because it enables open – close water pump automatically. When full of water, was ordered off the water. But When levels gradually reduced To the required, Then turned on fully the water. So We do not have to worry about overflow […]