Connected to a mains supplied amplifier are some oscillators running on 12v batteries. I am printing with paint that is connected to these oscillators, that resists the voltage (approx 0.2 - 6v) and I am worried that there is a potential for electrocution if a in-house amp isn't earthed properly. I have read that I can put a DI box in-between the amp and my battery powered electronics in a book: Hand Made Electronic Music by Nicholas Collins. Has anyone got any in-depth solutions advice for this please?
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