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SYSTEMS AND METHODS FOR CONTROLLING RAILROAD HIGHWAY CROSSING FLASHERS
SYSTEMS AND METHODS FOR CONTROLLING RAILROAD HIGHWAY CROSSING FLASHERS
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机译:用于控制铁路高速公路交叉道口的系统和方法
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摘要
A railroad crossing warning circuit includes a lamp and a signal generator for generating a first signal of a selected frequency. Divider circuitry divides the frequency of the signal to generate second signal at a flashing frequency. A switch responsive to the second signal controls current flow through the lamp and cause the lamp to flash at the flashing frequency.
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