Topic: symbolic radionics machine

Ballasts are rated for the scale of lamp and energy frequency. In North America, the AC voltage is insufficient to start long fluorescent lamps, so the ballast is commonly a step-up autotransformer with substantial leakage inductance (so as to limit the present circulate). Both type of inductive ballast may embrace a capacitor for power factor correction. Fluorescent lamps can run directly from a direct current (DC) provide of enough voltage to strike an arc. The ballast should be resistive, and...