Non CT xfmr for coiling

["Timothy W. Kelogg" <twk5-at-worldnet.att-dot-net> (by way of Terry Fritz <twftesla-at-uswest-dot-net>)]

Can I use a non center tapped transformer to make a little coil?  I just
saw one at a local thrift shop - looks like a little neon sign transformer,
has one output lead and  the plate on it says it has a 5 kv output. 

Timothy