Traditional Chinese Practical Reactivity Trainer: Circuit Design, Parts List & Workshop Prototype Guide
In short: Traditional Chinese Practical Reactivity Trainer. 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 2505 words of English technical text, translated and preserved without editing. It is intended for experimental and reference use, not for regulated or commercial certification.
Reaction trainerFigure 135-1 is the electrical schematic diagram of the reaction force training device. Its core component is the decimal counter C187. When there is a pulse trigger signal at its CE terminal, the output terminals Q1 ~ Q10 will turn to high level in sequence (when one terminal is high level, the other terminals are low level); when Q10 turns to high level, the counter returns to the starting position and the above process is repeated. The waveforms at each end are shown in Figure 135-2.Transistor VT1 and other components form a negative resistance oscillator, which generates a pulse signal that directly triggers the CE terminal of C187, causing the output terminals Q1 to Q10 to become high level in sequence, and the cycle continues. Each output end of C187 is connected to a buffer amplifier to drive the light-emitting diode. One-way thyristor VS1 and VT2 form an electronic switch to control the operation of the oscillator. alt="197.jpg (83212 bytes)">Figure 135-1The speed at which the light-emitting diodes VD1~VD10 are cyclically lit is determined by the frequency of the pulse trigger signal (adjusting RP) to adapt to the reaction speed of different people. If SB1 is pressed, VS1 is turned on, the oscillator stops vibrating, the light-emitting diode stops cycling, and the entire circuit is in a stable state. At this time, one of VD1~VD10 always shines. Each light-emitting diode is "assigned" a different value in advance, so that the value represented by the light-emitting diode that is lit when stable is the score. Obviously, if you want to get a high score, you must quickly press SB1 at the moment when the LED with a higher representative value is lit. Without a certain reaction speed, it is very difficult. After pressing SB2, the circuit starts working again from the beginning. …
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Lei Cheng
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Lei Cheng