DIY Compressor time delay circuit
SEE DIY compressor time delay circuit. Protect your compressor when power outage and Electrical fluctuations. Using normal parts and cheap.
Simple Switch off delay circuit using 2N4871
This circuit prevents surges. From the opening is switched off or power failure. The damage to electrical appliances.
Surge protection circuit for power supplies
The surge protection circuit important! Sometimes, our electrical appliances may damage easily by little high voltage surges. We can protect this problem.
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. [...]