giftiger_wunsch
New Member
Hi,
I'm new to electronics, but I've converted a mains AC/DC adapter plug (230VAC input, 6VDC output) from an old set of speakers into a power supply for a microcontroller, but after checking the voltage when using it for another project recently, I noted that when it was plugged in and switched on, but the output circuit was not connected, my voltmeter read 25V and was slowly climbing.
Is it possible that the transformer is producing excess charge in the output circuit since it's not being discharged into a circuit, or should I buy a new voltmeter?
Thanks in advance for any responses.
I'm new to electronics, but I've converted a mains AC/DC adapter plug (230VAC input, 6VDC output) from an old set of speakers into a power supply for a microcontroller, but after checking the voltage when using it for another project recently, I noted that when it was plugged in and switched on, but the output circuit was not connected, my voltmeter read 25V and was slowly climbing.
Is it possible that the transformer is producing excess charge in the output circuit since it's not being discharged into a circuit, or should I buy a new voltmeter?
Thanks in advance for any responses.