Our power supply chokes are designed to work at 100/120Hz and with voltages around 100V. Most induction meters work at a few volts or less, at around 1kHz. This is not the correct operating point for a power supply choke, and the reading on the induction meter is usually around half the specified value of the choke.

Best way to measure the inductance in a power supply choke is to connect the choke to something like 100V, 50/60Hz, measure voltage and current and calculate inductance. I use a variable autotransformer connected to my mains outlet for this measurement. Be careful however how you connect the autotransformer to the mains, so you do not touch 220V when you think your terminal is at 0V.

Help is on its way

Thank you for seeking help from our experts. Your request has been forwarded to our internal experts for prompt assistance. We will get back to you shortly. In the meantime, please check your email for further updates.


Thank you for your message, we will answer you shortly