This is an old wyne-kerr bridge. It is the only one that allows measurements at the operating frequency.
Alvey,
What no dip meter?
I think carefully done with 1% capacitors a dip meter is quite accurate, an SDR helps to easily measure the exact dip frequency. (Dip meters seem almost unknown these days)
I have noticed that if RF
toroids are measured at the typically 1khz, or 12khz test frequency, they can show up to 20% error. Sometimes worse.
Are these the general purpose multimeter-type testers?
Many of the modern L/C meters use 300-500KHz, one I use compares well with normal HF type inductors.
But, the problem is that others I've tried are not so good..
73 Alan G4ZFQ
