Schematic Diagrams

Useful schematic and wiring diagrams. ✔ ✔ Enjoy electronic circuits, let your idea comes to hardware

Surge protector

The tweeter speaker protection circuit

This is The small tweeter speaker protection circuit It can be packed into any speaker cabinet, and does not require a power supply as well. Normally high powered audio system. Internal circuitry prevents speaker damage with always packed.It focuses woofer speaker protection. But when we listen to a lot of treble. Or high frequency speakers […]

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Diy surge protector circuits

When has a thunderstorm. Electrical is off, or power surges the extreme, but sometimes we need to use the electrical appliances. And in sensitive electrical appliance damaged easily. Power surges a little. Might make it wastes. In particular surge. At you firstly turn on the switch. Should have the power to delay, gradually release it […]

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Switch off delay circuit by 2N4871

This circuit prevents surges. From the opening – is switched off or power failure. The damage to electrical appliances. The circuit will switch to use a short period before Power raising circuit to go. When raising the power supply 9-volt circuit then. Circuit delay. The duration of charging C1. VR1 is adjusted with time.When C1 […]

Diy surge protector circuits

When has a thunderstorm. Electrical is off, or power surges the extreme, but sometimes we need to use the electrical appliances. And in sensitive electrical appliance damaged easily. Power surges a little. Might make it wastes. In particular surge. At you firstly turn on the switch. Should have the power to delay, gradually release it […]

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