Abstract: A bulb detection circuit is associated with a dimmer circuit for a lighting system. The bulb detection circuit is operable to detect whether an incandescent or a fluorescent bulb is received in an electric light socket. The socket may be hardwired to the circuit, or could be plugged into an electrical outlet. The bulb detection circuit may utilize a separately inventive method of measuring the resistance by looking at an RC circuit time constant. Further, the bulb detection circuit may utilize a separately inventive method of identifying a short circuit by again looking at the RC circuit time constant.

Abstract: A method of making a hinge having a tongue component with an integral pin portion. The tongue component is formed by rolling up a free end of a shaped sheet metal blank and intermittently shaping the rolled portion with dies. The roll or degree of rotation inparted to the free end of the sheet metal blank to form the pin should preferably be between 475.degree. and 550.degree..