Sim900a Gsm Module Power Supply

The sim900a can search the two frequency bands automatically.

Sim900a gsm module power supply.

Although it has a power supply pin which can be connected with the arduino s 5 volts. It draws high current upto 2a when transmitting data so i would advise using a good quality power supply with capacity of 2 5a 3a. In starting days it worked fine. The gpio pins help to perform the simple and advance i o function.

As i said earlier the gsm sim900a module has no onboard voltage regulator. Gsm sim900a power supply. Check the power requirements of gsm module gsm modules are manufactured by different companies. But now it is working only on the ac to dc adapter 12v that is why i bought 12v rechargeble battery.

You need to double check your gsm modules power requirements. I am interfacing simcom s gsm module sim900 with arduino. The gsm sim900a module interfacing with nodemcu esp8266 and esp32 will be explained in one of my future articles. The frequency bands also can be set by at command.

Sim900a gsm module features. Picture 1 and 2 2. Typical power consumption in sleep mode is 1 5ma. The sim900a gsm module has an operating voltage of 3 4v 4 5v.

My battery is. The gsm sim900a module interfacing with esp32 will be explained in one of my future articles. Now wait for some time say 1 minute and see the blinking rate of status led or network led d6 refer picture 5 gsm module will take some time to establish connection with mobile network 5. I want to power gsm sim900a with lead acid rechargeable battery 12v 1 2ah.

Sim900a gsm module pin configuration descripton gpio pins. In this tutorial our gsm module requires a 12 volts input. Connect the antenna picture 4 4. Although it has a power supply pin which can be connected with the arduino s 5 volts.

Insert your sim card to gsm module and lock it. Gsm sim900a power supply. As i said earlier the gsm sim900a module has no onboard voltage regulator. How to give power supply to my gsm module with the battery.

So we feed it using a 12v 1a dc power supply. All pins give the maximum output equal to the power supply which is useable to control most of the devices like sensors and other modules. They all have different input power supply specs. The voltage regulator i am using is l7805 which gives a regulated output voltage of 4 9 v.

How should i design the circuit so that i get 3 2v 4 8v with 2a for proper gsm module operation without destroying any components. My gsm sim900a modem is.