Power Module

DC-DC Buck Converter Step Down Module LM2596 Power Supply is a step-down(buck) switching regulator, capable of driving a 3-A load with excellent line and load regulation. These devices are available in fixed output voltages of 3.3 V, 5 V, 12 V, and an adjustable output version.

The LM2596 series operates at a switching frequency of 150kHz, thus allowing smaller sized filter components than what would be required with lower frequency switching regulators.

It is an 8 Channel Isolated 5V 10A Relay Module opto coupler, which can be controlled directly by a wide range of microcontrollers such as Arduino, AVR, PIC, ARM, PLC, etc. It is also able to control various appliances and other types of equipment with a large current. Relay output maximum contact is AC250V 10A and DC30V 10A.

One can connect a microcontroller with standard interface directly to it. Red working status indicator lights are conducive to the safe use. The 8 Channel Isolated 5V 10A Relay Module optocoupler has a wide range of applications such as all MCU control, industrial sector, PLC control, smart home control.

So, ready to get switching on your Raspberry Pi?! This neat relay module features 8 x 12V relays rated at 10A/250V each. It is designed to switch up to 4 high currents (10A) or high voltage (250V) loads with the help of microcontroller!

Each relay can individually switch to on/off state. It only requires a voltage of approx 1.0V to switch the inputs on but can handle input voltages up to 12V. This makes it ideal for 3.3V, 5V & 12V devices.

1. High-level trigger refers to the signal voltage between input and trigger, can be understood as a signal input with VCC cathode short-circuit triggered away;
2. Low-level trigger refers to the signal voltage between the input terminal and Earth OV trigger, can be understood as the signal input terminal and the GND negative electrode short circuit triggered away  1-channel relay module connection.

1. Power supply and relay instructions, lit, the disconnect is off;
2. The input signal, signal, common Terminal and start conducting;
3. Useful for appliance control;
4. DC or AC signal, control, you can control the 220V AC load.
5. One normally closed contact and one normally open contact
6. Triode drive, increasing relay coil
7. High impedance controller pin
8. Pull-down circuit for the avoidance of malfunction
9. Power supply indicator and Control indicator lamp
10. The module is compliant with international safety standards, control and load areas isolation trenches.

LM2596 DC-DC Buck Converter Step Down Power Supply Module with Digital Voltage Display

Features

• Input voltage range:4 40VDC
• Output voltage range:1.25-37VDC adjustable
• Output current:2A
• voltmeter range: 0 to 40V, error 0.1V
• Input reverse polarity protection
• Built in output short protection function
• Built in thermal shutdown function
• L x W x H =6.1*3.4*12 cm
• Weight: 22g
• LED digital voltmeter tube, the accuracy is adjustable function, can be aimed at your multimeter adjustable accurate.
• Press the right key to let the display show the input or output voltage. when the right OUT led light, it shows output, the left IN led show input.