The design of battery-powered equipment can often be quite challenging. Since few ICs can operate directly from the end-of-life voltage from a 2-cell battery (about 1.8V), most systems require a DC/DC converter. The system designer often has a limited area in which to place the DC/ DC converter; associated inductors and capacitors must be small. [...]
Although semiconductor diodes available today are close to ideal” devices, they have severe limitations in low level applications. Silicon diodes have a 0.6V threshold which must be overcome before appreciable conduction occurs. By placing the diode in the feedback loop of an operational amplifier, the threshold voltage is divided by the open loop gain of [...]
This circuit Simple DC to DC Converter For Digital Circuit. It use Volt supply 5V Only, To Output Step up Volt 10V-12V DC max. I use IC 555 ( hot ic Timer) for Squarewave Oscillator to Driver mini Transformer and Diode, Zener Diode to Out DC Voltage. Read Detail More in circuit: Related Links More [...]
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