Bifilar transformers
Here is a nice description of bifilar transformers.
http://www.qrp.pops.net/xmfr.asp
Here is another very nice article about transformers including in a push-pull NPN
design.
http://www.oselectronics.com/downloads/Broadband%20Transformers.pdf
http://www.qrp.pops.net/xmfr.asp
Here is another very nice article about transformers including in a push-pull NPN
design.
http://www.oselectronics.com/downloads/Broadband%20Transformers.pdf