Asked 9 years, 2 months ago. Active 9 years, 2 months ago. Viewed 4k times. Renan 4, 2 2 gold badges 24 24 silver badges 45 45 bronze badges. Sunny Sunny 9 1 1 silver badge 2 2 bronze badges. Without isolation the whole amp could be live and dangerous. Go buy a power supply. Your not at the level where you should be messing with lethal voltages. Not using a transformer will mean that your device will be directly connected to mains through your amplifier.
If it has a metal housing, then chances are that the whole housing will be live. Same goes for the antenna or other wiring coming from it. Add a comment. Active Oldest Votes. However, quoting from the very same appnote: Warning : An electrocution hazard exists during experimentation with transformerless circuits that interface to wall power. Community Bot 1.
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