darksir
Junior Member level 1
Hi boys,
please, can you help me? I need create design of power supply for GSM module SIM900. I found some catalog schematic of LM2576 ADJ as STEP DOWN from 12VDC to 4VDC. It's ok, but I need step down converter from 24V AC. Is good idea to use catalog circuit with diode bridge in input? Which solution do you suggest? Diode bridge or simply use of one diode - for example 1N4004 and capacity 220uF / 50V?
I need power supply with peak current 2A max and supply with no interferences.
Thank you for some help,
Petr
please, can you help me? I need create design of power supply for GSM module SIM900. I found some catalog schematic of LM2576 ADJ as STEP DOWN from 12VDC to 4VDC. It's ok, but I need step down converter from 24V AC. Is good idea to use catalog circuit with diode bridge in input? Which solution do you suggest? Diode bridge or simply use of one diode - for example 1N4004 and capacity 220uF / 50V?
I need power supply with peak current 2A max and supply with no interferences.
Thank you for some help,
Petr