It has just occured to me that the 1A range may not be high enough for some of the LF QRO merchants. There is a simple mod which will extend the range up to 10A though you should be aware the ferrite
It has just occured to me that the 1A range may not be high enough for some of the LF QRO merchants. for qro you can buy cheap ex-warsaw pact "antenna equivalent". these are boxes which have an rf th
Hi Jacek, Yes I have been collecting thermocouple meters for about 60 years. The problem with them is they are very fragile. In the UK it is generally the case that any meter offered is usually of 19
Hi Jacek, Yes I have been collecting thermocouple meters for about 60 years. The problem with them is they are very fragile. In the UK it is generally the case that any meter offered is usually of 19
Hello Allan I assume the 10A mod is a matter of increasing the series R with the meter to around 800k? I suppose a 3way switch and extra trim pot could be added to preserve the 1A range too. Thanks f
Hi Ian, When the range of a current tranformer should be increased from 1A to 10A, the best way is to increase the number of turns of the secondary winding by a factor 10. This transforms the current
I made several modifications to get 5A FSD on my meter. Firstly, I used all of the supplied wire to make 17t on the toroid instead of the recommended 10t. I changed the input resistors which were get
Thanks Mike that is very useful after Hugh flagged up the diode voltage problem. It has the added advantage of not being as ragile as a nice thermocouple meter. You can thus save those for more contr
