情境
A technician building a workbench charger needs a documented schematic for a reliable linear-regulated 12V charger.
這張圖裡有什麼
看懂背後的決策。
01
Full-wave bridge provides both half-cycles, reducing ripple vs. half-wave design.
02
2200 µF filter capacitor smooths to acceptable ripple at 60 Hz.
03
LM317 Radj/Rfb values set Vout ≈ 14.4 V for proper lead-acid float charging.
Adjust resistor divider values for different target voltages; replace LM317 with LM338 for up to 5 A charging current.