Traditional Chinese Practical Ward Bed Pager (1): Circuit Design, Parts List & Workshop Prototype Guide
In short: Traditional Chinese Practical Ward Bed Pager (1). 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 2526 words of English technical text, translated and preserved without editing. It is intended for experimental and reference use, not for regulated or commercial certification.
Ward bed pager(1)Figure 162 shows the ward bed caller. Each SZ-1 digital tube can represent 10 beds, and 20 can represent 200 beds.The SZ-1 glow digital tube is a cold cathode glow device with a common shame electrode and 10 cathodes. The 10 cathodes are each made into the shape of ten numbers 0, 1, 2...9, and are formed by overlapping each other with a certain gap. Each cathode is equivalent to a neon lamp for the shared anode. As long as the 10 cathodes are connected to the power supply, the corresponding number can be displayed.The 180V DC power supply is added to the anode of the digital tube through the current limiting resistor R1~R20, and the switch (SB1~SB200) is used to directly control the cathode to ground, so that the power supply forms a loop. Whichever switch is turned on, the corresponding cathode ignites and glows. One SZ-1 can represent ten beds. …
Sign in to unlock
One-time payment per article, billed in credits (1 $ = 100 credits). You will review the invoice and the non-refundable digital-asset policy before anything is charged. The PDF is generated on demand and embeds a licensing watermark.
Unlock this article
One-time payment · permanent access after unlock · 1 $ = 100 credits
Member level pricing for this article
| Level | Cumulative top-up | Discount | Your price | You save |
|---|---|---|---|---|
| Free | Free | — | 4,170 credits | — |
| Bronze | $100.00+ | 2% off | 4,087 credits | 83 credits |
| Silver | $1,000.00+ | 5% off | 3,962 credits | 208 credits |
| Gold | $5,000.00+ | 10% off | 3,753 credits | 417 credits |
| VIP | $20,000.00+ | 15% off | 3,545 credits | 625 credits |
Prices are billed in credits (1 $ = 100 credits). Your level upgrades automatically as your cumulative top-up grows. Top up to unlock a higher discount ›
All articles are digital assets. Once a PDF is downloaded, the purchase is final and non-refundable.
Please log in to unlock this article.
Payment Methods
pay@viprole.com
Lei Cheng
pay@viprole.com
Lei Cheng