When driving a bluetooth audio adapter from the same power source as the amplifier, noise is likely to occur due to ground loop issues. This post shows one way to avoid this problem. Continue reading

Many electronic circuits are likely to get destroyed if the DC source polarity is reversed. Whenever there’s a possibility that the user might reverse the polarity by accident, the circuit should have an onboard polarity protection. In it’s simplest form, polarity protection may be implemented using a single diode: The drawback of this method is… Continue reading