The MEAN WELL HDR-150-24 is a highly efficient, compact DIN rail power supply designed to provide reliable electrical energy to circuits. It converts AC mains voltage into a stable 24V DC output, suitable for powering a wide range of electronic devices and systems. With its slim design and high efficiency, the HDR-150-24 is ideal for industrial automation, building automation, and general-purpose applications requiring a dependable power source.
This circuit is a basic AC to DC power supply that steps down 220V AC to a lower voltage using a transformer, rectifies it to DC using a bridge rectifier made of diodes, and smooths the output with an electrolytic capacitor. A rocker switch is used to turn the power supply on and off.
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This circuit appears to be a power supply unit with a bridge rectifier connected to a DC gear motor, indicating it is designed to convert AC to DC power for the motor. An electrolytic capacitor is used for smoothing the DC output, and a 7805 voltage regulator is included to provide a stable 5V output. Additionally, there is an LED with a series resistor, likely serving as a power indicator light.
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This circuit consists of two 5V 5A power supplies connected to an AC wall plug point, providing DC output through a 12-way connector. The ground connections from both power supplies are interconnected and also connected to the ground pins of two toggle switches. The DC outputs from the power supplies are separately connected to different pins on the 12-way connector, with each power supply output being switchable via one of the toggle switches.
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This circuit appears to be a power supply unit with a transformer for stepping down voltage, a bridge rectifier for converting AC to DC, and a voltage regulator for stabilizing the output voltage. It includes a Zener diode for overvoltage protection, capacitors for smoothing out ripples in the DC supply, and a fuse for overcurrent protection. A toggle switch and a rocker switch are used to control the power flow, and there is an LED indicator connected through resistors, likely for power-on indication.
Open Project in Cirkit DesignerThe following table outlines the key technical details of the MEAN WELL HDR-150-24 power supply:
| Parameter | Value |
|---|---|
| Manufacturer | MEAN WELL |
| Part Number | HDR-150-24 |
| Input Voltage Range | 85-264 VAC / 120-370 VDC |
| Output Voltage | 24V DC |
| Output Current | 6.5A |
| Output Power | 156W |
| Efficiency | Up to 91% |
| Dimensions | 105mm x 90mm x 54mm (W x H x D) |
| Operating Temperature | -30°C to +70°C |
| Protection Features | Overload, Overvoltage, Short Circuit |
| Mounting Type | DIN Rail (TS-35/7.5 or TS-35/15) |
| Certifications | UL, CE, EAC, RoHS |
The HDR-150-24 features screw terminal connections for input and output. The pin configuration is as follows:
| Pin | Label | Description |
|---|---|---|
| 1 | L | AC Line Input |
| 2 | N | AC Neutral Input |
| 3 | FG | Frame Ground (Earth) |
| 4 | +V | Positive DC Output |
| 5 | -V | Negative DC Output |
L (Line) and N (Neutral) terminals.FG (Frame Ground) terminal to the earth ground for safety.+V terminal to the positive input of your load or circuit.-V terminal to the negative input of your load or circuit.The HDR-150-24 can be used to power an Arduino UNO and other peripherals. Below is an example of how to connect it:
+V terminal of the HDR-150-24 to the Arduino's VIN pin.-V terminal of the HDR-150-24 to the Arduino's GND pin.Here is a simple Arduino sketch to blink an LED when powered by the HDR-150-24:
// Simple LED Blink Example
// This code blinks an LED connected to pin 13 of the Arduino UNO.
// Ensure the Arduino is powered by the HDR-150-24 via the VIN and GND pins.
void setup() {
pinMode(13, OUTPUT); // Set pin 13 as an output
}
void loop() {
digitalWrite(13, HIGH); // Turn the LED on
delay(1000); // Wait for 1 second
digitalWrite(13, LOW); // Turn the LED off
delay(1000); // Wait for 1 second
}
No Output Voltage:
L and N) and ensure the mains power is on.FG terminal is properly grounded.+V and -V) for loose or incorrect wiring.Power Supply Shuts Down:
Overheating:
LED Indicator Not Lit:
Q: Can the HDR-150-24 be used with a battery as the input source?
A: Yes, the HDR-150-24 supports DC input voltage in the range of 120-370 VDC. Ensure the battery voltage is within this range.
Q: Is the output voltage adjustable?
A: Yes, the output voltage can be adjusted between 21.6V and 26.4V DC using the built-in potentiometer.
Q: Can I use this power supply to charge batteries?
A: The HDR-150-24 is not specifically designed for battery charging. Use a dedicated battery charger for optimal performance and safety.
Q: What type of DIN rail is compatible with this power supply?
A: The HDR-150-24 is compatible with TS-35/7.5 or TS-35/15 DIN rails.
Q: Does the power supply include a fan?
A: No, the HDR-150-24 is fanless and relies on natural air convection for cooling.