Tag Archives: 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… Read more »

Diy surge protector circuits

Schematic Diagrams      Comments Off on 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… Read more »

Switch off delay circuit by 2N4871

Schematic Diagrams      Comments Off on 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… Read more »

Diy surge protector circuits

Schematic Diagrams      Comments Off on 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… Read more »