Hello to the group a while back a discussion occurred about old ethernet 10 BT transformers for isolation and square to sine conversion. You can obtain NOS on ebay for a 14 pin dip 2 transformer block 20F001n from China quite cheap. I picked up 20.
As a transformer they operate from 40 KHz to 16 Mhz and then roll off really kicks in Driving the transformer with a square wave from HCmos they do a good job of converting a square wave to a sign wave. using 2 50 ohm resistors delivers 4 Vpp into 50 Ohms. Clearly 150-200 ohms would be better to get the signal down to 1 or so volts for use. Distortion is -68 db. Most likely the products from my sig gen to logic conversion. For me at least these are pretty handy. I take no credit for the idea to use these. Just want to share the information and details from my tests. Regards Paul WB8TSL _______________________________________________ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
