Vibrator power sup0ply question..(O.T.)

[orange_glow_fan]

Still working on this Grundig radio and have a quick question. The capacitor circled in MY version is a 50uf@25vdc NON-polarized cap. It lives on the switched 12vdc line from the car battery and goes to the center tap of the transformer primary. Can I use regular polarized electrolytic? or is that a bad idea?

[gregebert]

I dont think that cap is directly exposed to the push-pull activity from the vibrator/transformer, but there could be some second-order effects. Note the series inductor; that raises the possibility the cap could get exposed to reverse voltage.