Priority Electronic Pager: Traditional Chinese Circuit Design Guide
In short: Traditional Chinese Priority electronic pager. This entry documents a circuit & prototype taken from Chinese practical-technology literature, written for small-scale makers and home producers. The text below is the full English translation of the original Chinese workshop notes, covering materials and quantities, the step-by-step sequence, and the practical cautions recorded in the source. Roughly 3033 words of English technical text, translated and preserved without editing. It is intended for experimental and reference use, not for regulated or commercial certification.
priority electronic pagerUsing two quad operational amplifiers LM324 and some common components, you can design a pager that is simple to make and easy to install. The pager has a priority judgment function, which is very useful for hospitals and hotels.In Figure 181, the part to the right of points M and N is the remote controller, which is placed in a room away from the duty room. It is connected to the pager part by only two wires, so the wiring is very simple and convenient. There is a normally open button SB and a resistor R next to each bed, and they are connected in series, so the installation in each room is very simple.The part to the right of points M and N is the circuit schematic diagram of the pager placed in the duty room. Each operational amplifier and light-emitting diode in the figure corresponds to a bed. Eight operational amplifiers form an eight-stage chain comparator, which serves as a signal receiver for each bed. …
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