Basic electronic structures

Capacitive power supply (simple rectifier)

$V_{o u t} = V_{D Z} - V_{F} (D 1) ≃ V_{D Z} - 0, 7 V$

Output current limited to: $I_{o u t} = \frac{\sqrt{2} V_{i n (r m s)} - V_{D Z}}{2 \sqrt{2} (R_{1} + \frac{1}{2 π . f . C_{1}})}$