hello,
i bought one of these
http://www.ebay.co.uk/itm/USB-2CH-2...919203?hash=item3a8c98ad23:g:pTUAAMXQlgtSysjQ
and i plugged it in to a half wave rectifier circuit that i am learning about and got 4 volt peak to peak. the sine wave didnt look too great either. the frequency was correct at 50Hz. i had the probe set to 1x. i tested the dso using the 1kHz test signal and that seemed ok. the circuit i built is a 240v / 12v transformer 6va. i measured 16 volts without a load. i tried to measure this using the oscilloscope and got the 4 volts mentioned above. am i doing something wrong (which is my guess) or is the dso cheap rubbish (another guess).
any help would be great, hope your all doing well by the way!!!
thanks
simon
i bought one of these
http://www.ebay.co.uk/itm/USB-2CH-2...919203?hash=item3a8c98ad23:g:pTUAAMXQlgtSysjQ
and i plugged it in to a half wave rectifier circuit that i am learning about and got 4 volt peak to peak. the sine wave didnt look too great either. the frequency was correct at 50Hz. i had the probe set to 1x. i tested the dso using the 1kHz test signal and that seemed ok. the circuit i built is a 240v / 12v transformer 6va. i measured 16 volts without a load. i tried to measure this using the oscilloscope and got the 4 volts mentioned above. am i doing something wrong (which is my guess) or is the dso cheap rubbish (another guess).
any help would be great, hope your all doing well by the way!!!
thanks
simon