A compact, pulsed, low-power, low-voltage power supply with 110/220 V power supply and a 5 V output with a current of up to 0.7 A, that is, with a maximum power of 3.5 watts, you may need it as a power source for your small electronic projects. I note right away that this source of electric energy has feedback at the output, based on the popular TL431 adjustable zener diode and optocoupler. When the output voltage becomes higher than normal, the optocoupler will slightly cover the switching transistor, thereby reducing the output voltage, so this output parameter is relatively well controlled.
Permissible input voltage:AC 85 ~ 265 V, 50/60 Hz or 100 ~ 370 V DC
Input Current Current: 0.0273 Ampere (AC 110V); 0.014 Ampere (AC 220V)
Input starting current: 20A
Output voltage: 5 V DC (+ / - 0.2 V)
Output current: 700 mA (0.8 A peak current)
Power: 3.5W
Working temperature: -20 ~ 60 C
Relative humidity: 40-90% RH
Output ripple no more than: 60mV
Output power: 0-4W (direct current)
Efficiency (Efficiency): 80%
Override switch machine: MAX 10%
Output voltage rise time: MAX 100 ms
Dimensions: 30 x 20 x18 mm
DC output voltage:, recovery: lock, restart after recovery
Exit via power protection: yes, recovery: lock, restart after recovery
Short circuit protection: yes, automatic recovery after short circuit eliminated
Overheat protection: yes, recovery: lock, restart after recovery
Over current protection: yes, recovery: lock, restart after recovery
For daily use, it is recommended that you put it in a case to prevent electric shock. Such a small power supply can be used for LEDs, developments related to microcontrollers, like a charger for old phones.
Cost: ~ 91