This inverter circuit with transistors provides a voltage of 300 V from a 12 V supply. The current, with the original transistors, is only 55 mA. Transistors must be mounted on heatsinks.
The circuit shown in the figure can either be used to activate a high-power lamp or LED for...
The transistor of this constant current source may be the BC548 or equivalent. Resistor R2 may be...
We found this simple alarm that uses a double contact relay to obtain the lock when triggered. The circuit...