PWM DC Motor Speed Controller 10A 5-16V (ARD152E)

 A PWM (Pulse Width Modulation) speed controller adjusts the average power going to a DC motor by rapidly switching the supply ON/OFF.

So instead of lowering voltage, it:

•  Sends full voltage pulses
• Changes the “ON time” (duty cycle)
• Controls motor speed smoothly from 0–100%

Typical specifications (10A 5–16V type)

• Input voltage: 5V – 16V DC
• Max current: 10A (usually 3–5A continuous is safer without cooling)
• Control method: Rotary potentiometer (knob)
• PWM frequency: ~10kHz – 25kHz
• Speed range: 0% – 99% duty cycle
• Size: ~30mm × 20mm compact board

Real safe continuous use is often:

• 3A–6A without heat sinking
• 10A only with airflow / short bursts