Fire Alarm
Circuit
The circuit makes use of characteristic of a diode. As already explained normally diode conducts only in one direction and it blocks voltage in the reverse direction. However there will be a little leakage current flowing through which is normally negligible. But if the temperature increases, this leakage current also increases and this effect is [...]
Three Terminal Adjustable Regulator
Three terminal regulators are just right when we need a single fixed voltage. But they will be cumbersome as a hobbyist works with different voltages at different times and it becomes unwieldy to keep power supplies with a number of three terminal regulators.
Wouldn’t it be better if we have an adjustable but regulated power supply, [...]
