12v RELAY ON 6V SUPPLY

This circuit allows a 12v relay to operate on a 6v or 9v supply. Most 12v relays need about 12v to "pull-in" but will "hold" on about 6v. The 220u charges via the 2k2 and bottom diode. When an input above 1.5v is applied to the input of the circuit, both transistors are turned ON and the 5v across the electrolytic causes the negative end of the electro to go below the 0v rail by about 4.5v and this puts about 10v across the relay.

Alternatively you can rewind a 12v relay by removing about half the turns.

Join up what is left to the terminals. Replace the turns you took off, by connecting them in parallel with the original half, making sure the turns go the same way around
 
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Easy 6V Fluorescent Light

A fluorescent lamp or else fluorescent tube is a gab-discharge lamp with the aim of uses electricity to excite mercury vapor. The excited mercury atoms bring into being squat-wave ultraviolet light to facilitate subsequently causes a phosphor to fluoresce, producing visible light. The following schematic shows a easy 6V Fluorescent Light Circuit Diagram design.

Simple 6V Fluorescent Light Circuit Diagram design

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6V Power Supply With 12V Relay

6V Power Supply With 12V Relay Circuit

Description :

This ambit allows a 12v broadcast to accomplish on a 6v or 9v supply. Most 12v relays charge about 12v to "pull-in" but will "hold" on about 6v. The 220u accuse via the 2k2 and basal diode. When an ascribe aloft 1.5v is activated to the ascribe of the schema, both transistors are angry ON and the 5v beyond the electrolytic causes the abrogating end of the electro to go beneath the 0v abuse by about 4.5v and this puts about 10v beyond the relay.

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