UNIVERSAL ON-DELAY TIMER

摘要

An on-delay timer comprised substantially entirely of solid state elements for energizing a load a timed interval after the pilot switch is closed. Upon reopening the switch, the load is immediately deenergized and the timer is automatically reset into readiness for another timing operation. The timer is universal in that it can be operated on a wide range of voltages (20 to 132) of either D.C. or 50/60 Hz A.C., and the value of the load current can be from a few milliamperes to a value limited by the capabilities of the components used, such as one ampere for a typical timer. It incorporates a leaky switch detector that enables proper operation even if the switch leaks current to some extent. An indicator indicates "off," timing (flashing) and "on " conditions.