F4901 - 11a 24v Schematic Top
Component Type
: Surface-mount (SMD) fast-acting or slow-blow fuse . Ratings : Current : 11 Amps (denoted by "11A"). Voltage : 24 Volts (denoted by "24V").
: Converts AC to pulsating DC using high-current diodes like the transistors for regulation. Smoothing Capacitors : Large electrolytic capacitors (e.g., ) are used to reduce ripple voltage. Protection Circuitry : Includes f4901 11a 24v schematic top
Common Terminals (1, 6, 11):
These are the "switches" that move when the coil is energized. Common Terminals (1, 6, 11): These are the
Transformer & Secondary
- Live & Neutral → Fuse F1 (slow-blow, 15A/250V) → MOV (14D471K) → Common mode choke L1 (2× 10 mH) → X-cap (0.47 µF) → Bridge rectifier D1-D4 (GBU1006).
- Rectified DC → Bulk capacitor C5 (220 µF, 450V) → Primary of transformer T1 (pin 1-3).
- F4901 Pin 7 (VCC) gets startup current from a resistor from the bulk cap, then powered by an auxiliary winding after startup.
- F4901 Pin 6 (OUT) drives the gate of Q1 (MOSFET, e.g., 20N60) through a 10Ω resistor and a 15V Zener gate clamp.
A1 (+)
| Terminal Label | Function | Description | | :--- | :--- | :--- | | | Coil Input | Connect to +24V DC Control Signal | | A2 (-) | Coil Output | Connect to Ground (GND) | | T1 / L1 | Power In | High Current Input (Battery +) | | T2 / L2 | Power Out | High Current Output (Load +) | Live & Neutral → Fuse F1 (slow-blow, 15A/250V)
protection, switching, and sensing
The "F4901 11A 24V schematic top" represents a classic medium-power switching design. Whether you are repairing a PLC output module, a LED driver, or a solenoid controller, understanding the blocks will get you 90% of the way to a fix.
If you're looking for a different component, please let me know: Are you working on a Williams System 11A pinball machine? (They also use "11A" power boards). Is this for a TV power supply (which often use F-series part codes)? Can you describe the physical shape