Square dance club goal is to promote and advance square dance as a recreational activity. Typically clubs accomplish this goal through the following activities: This is not an exclusive list, and square dance clubs are constantly on the look out for new ways to achieve their goals. Associations, partnerships and other cooperative ventures have become increasingly more important to square dance clubs. Membership in square dance clubs seems to have peaked in the late '70s and early '80s, and has gradually decreased since that time. Providing classes and training opportunities is the main activity for the majority of square dance clubs. This activity
Transformer types impedances between circuits over a limited range of frequencies, using only a length of transmission line. The line may be coaxial cable, waveguide, stripline, or microstrip. Baluns are transformers designed specifically to connect between balanced (non-grounded) and unbalanced (grounded) circuits. These are sometimes made from configurations of transmission line and sometimes bifilar or coaxial cable and are similar to transmission line transformers in construction and operation. Baluns can be designed to not only interface between balanced and unbalanced loads, but to additionally provide impedance matching between those load types. Ferrite-core transformers are widely used in (intermediate frequency) (IF) stages in