Braun Silk-epil 7 Epilator: Power Conversion for 240V Mains Operation & Charging Solution

Question

I have such a problem - my wife has an epilator (now the warranty has expired, so I can combine) that works only from the battery, when connected to 240V, there is only charging - what should be done to make it work also on 240V, i.e. that it works on the mains and not only charging. The...

Kaliber PC - Service · Answer

Hello.

In fact, you've already answered your question - you would have to completely redo the power section of the epilator that is, adjust the mains voltage to that of the battery and power this epilator with that. But that's an approach mega theoretical , in practice it is quite a serious change and it is even hard to clearly define how to do it exactly ... Straightening, filtration, noise suppression, good stabilization - this is the direction to follow, but with extreme caution at 230V .

The question is - what is the point of such a modification?

mariuszp19 · Answer

But this epilator is powered by a power adapter, not directly from 230V. The point is that the epilator only works when the AC adapter plug is removed from the epilator socket. I have the same problem hence this post.

And the point of reworking is that the internal batteries do not stand up to the full epilation process. And after some time, the process must be interrupted to recharge the batteries. And yes, after plugging into the power supply, you could continue epilation. Of course, epilation in the shower is not necessary then for obvious reasons.

Kaliber PC - Service · Answer

Comprehensive answer, all clear. At least a piece ... ... intrigues me, because I have not yet come across a daily use device, which, when connected to the power supply, would not work normally and charge at the same time, but only charge. Maybe I have seen too little in my life, ehhh ... But to the point - are you saying it's powered by an AC adapter? At the beginning, it would be good to know the current / voltage parameters of this power supply and the rechargeable battery, and then combine it specifically with the conversion.

tata1 · Answer

First check that it will work with the epilator plug plugged in, but do not connect the power adapter. Maybe there is just some simple circuit (or even a micro switch) that only checks for the presence of the plug.

Anonymous · Answer

At 99%, the current efficiency of the charger will be too low to significantly affect the current balance and extend the battery life (it may also be dangerous for the charger). It is almost certainly a charger with unstable voltage and low current efficiency, not a power supply as such.

JasnyKris wrote:
the power section of the epilator should be completely redone,

but differently - it would be necessary to separate the power supply from the power supply and the battery, separate sockets for the power supply and charger, the current consumed by the epilator from the battery is probably large - so the cable could not be thin (an obstacle), the appropriate plug and socket. Alternatively, disconnect the battery and use only the power supply (NOTE - it must be a safe power supply in the appropriate insulation class), preferably permanently connected with a cable (without a plug and socket).
Contrary to appearances, the matter is not easy.

_jta_ · Answer

A typical socket for a coaxial power plug has a switch - I have a flashlight, in which inserting the charging plug disconnects the battery from the flashlight. It may even make sense that the voltage is slightly higher when charging, and could damage the inverter in the flashlight. A similar switch has headphone and speaker sockets ...

Anonymous · Answer

Rather not - because the efficiency of the charger is so low that loading the battery-charger set will immediately lower the voltage. Rather, it's about safety - preventing use (e.g. in a bathtub - what?) With the charger cable connected.

Braun Silk-epil 7 Epilator: Power Conversion for 240V Mains Operation & Charging Solution

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