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This is an amplifier circuit based on IC AN374 which has a 1 Watt output power with supply voltage and a maximum of at least 8 volts to 16 volts with the DC current. Following amplifier circuit 1 Watt l 8 - 16 Volts Audio Amplifier. 1 Watt l 8 - 16 Volts Audio Amplifier

This is very simple electronic circuit diagram for 3 to 12 volts converter, this circuit simple and high efficiency step-up dc dc converter circuit that require few external components can be designed using the LM2700 step-up DC/DC converter with a 3.6A, 80mohms internal switch and pin selectable operating frequency. 3 to 12 Volts Converter Circuit Diagram:   With the ability to produce 500mA at 8V from a single Lithium Ion battery, the LM2700 is an ideal part for biasing LCD displays. The LM2700 can be operated at switching frequencies of 600kHz and 1.25MHz allowing for easy filtering and low noise. An external compensation pin gives the user flexibility in setting frequency compensation, which makes possible the use of small, low ESR ceramic capacitors at the output. This circuit can be used for handheld devices and some other portable applications. This step-up DC DC converter will provide a 12 volts DC output voltage from an input voltage range between 2.5 to 4.2volts.

Inductorless 3-to-5 Volts Converter Circuit Diagram. By configuring a comparator and a transistor to control the oscillator in a charge pump circuit, you enable the pump to generate a regulated output of in principle any desired value. Charge pump ICs can either invert or double an input voltage (for example, 3 V to –3 V or 3 V to 6 V). The charge pump itself does not regulate the output voltage and one running off 3 V is not normally capable of generating intermediate output voltage levels like 5 V. However, by adding a comparator and a reference device, you can create arbitrary output levels like 5 V and regulate them as well. Inductorless 3-to-5 Volts Converter Circuit Diagram Charge pump IC1 (a MAX660) has an internal oscillator whose 45 kHz operation transfers charge from C1 to C2, causing the regulated output to rise. When the feedback voltage (pin 3 of IC2) exceeds 1.18 V, the output of comparator IC2 (a MAX921) goes high, turning off the oscillator via T1. The comparator hyste...

This is a simple circuit of  230 Volts Flashing Lamps to make easy. This circuit is intended as a reliable replacement to thermally-activated switches used for Christmas tree lamp-flashing. The device formed by Q1, Q2 and related resistors triggers the SCR. Timing is provided by R1, R2 & C1. To change flashing frequency do not modify R1 and R2 values: set C1 value from 100 to 2200µF instead. Best performances are obtained with C1= 470 or 1000µF and R4= 12K or 10K. Due to low consumption of normal 10 or 20 lamp series-loops intended for Christmas trees (60mA @ 230V typical for a 20 lamp series-loop), very small and cheap SCR devices can be used, e.g. C106D1 (400V 3.2A) or TICP106D (400V 2A), this last and the suggested P0102D devices having TO92 cases. 230 Volts Flashing Lamps Circuit Diagram: Parts List: R1___________100K   1/4W Resistor R2,R5__________1K   1/4W Resistors R3,R6________470R   1/4W Resistors R4____________12K   1/4W Resisto...