Universal AC DC socket without polarity?

Question

Electronics

Guys, tell me the scheme for connecting both alternating and constant to the block, the polarity is not important, turned it on - and it works.
Thanks

Answer 1

Diode bridge rectifier

Answer 2

Graetz bridge , a.k.a. diode bridge.
There is a nuance, namely: the output will have a lower voltage than the input
Uвых = Uвх - 2*Uпр
, where Upr is the direct voltage drop across the diode (usually 0.6V for silicon diodes)

Answer 3

Diode bridge type GBJ2504-F, wiring diagram on the Internet.
But you need to understand that if the supply voltage of the device is 5 volts, then by connecting a 5 volt power supply through such a diode bridge, 4 volts will reach the device and the device may not work.
Partially, the situation can be improved using Schottky diodes (make a bridge yourself from 4 diodes), you need to choose diodes with a minimum voltage drop, such as VS-19TQ015PBF, then 4.5 volts will reach the device, which is also not a guarantee of performance.
If this is a 12 volt or more device, then most likely it's okay.