SPORTS EXAMINER

To the line “Start” suitable for a student with basketball ball in hands, and comes on the panel associated with the starting button of the examiner, the Machine still does not work: it can be switched on only after the button is released.

The young athlete starts to dribble the ball, runs to shield the basketball and throws the ball to the basket. If the throw was accurate, a participant of the competition quickly comes back and clicks on the finish button.

 

He who is in the ring the first time will not fall, throwing the ball up to three times, and then returns to the finish button and pushed it. On the wall light comes on with the evaluation Board.

This examiner has already become a reliable assistant in physical education classes in the school № 1 of the Chervonograd Lviv region. That is how the automatic device. When the student presses switch S1, relay K1 and contact K1.1 switches the relay of the RS. Their contact plates K3.1 it cambiocorsa, and KZ.2 preparing for the operation of the switch K2. The latter turns on when the release button S1, cambiocorsa (K2.1) and connects (K2.2) the multivibrator transistors V1, V2. Relay K5 periodically pulsates and their contact plates K5.1 includes a stepper seeker K6 that counts down the seconds until the relay K2, approaching fatal rating of “2”. Therefore, the young athlete should strive as quickly as possible to complete the exercise and click on the finish button S2.

 

Fig. 1. Scheme examiner.

 

At this point relay K4 and its contact K4.2 breaks the circuit of the power supply relay K3, and through him, and K2. The multivibrator is disabled and the stepper seeker stops. At the same time cambiocorsa K4 (K4.1) and includes a light Board (K4.3).

 

If the student did not meet during the time allocated for the exercise, relay K4 is powered via the K6 lamella.2 stepping.

 

The examiner alert button S5.

 

The slot could appreciate sports opportunities students of different ages, in series with the resistor R2 included chain R3, R4, R6, R9, R10. With the switch S4, the coach prepares the examiner to work with the students of a class. The position of the switch S3 choose depending on who performs the exercise boys or girls.

 

The design is applied with the following details: relay RES-22 (passport RF4.500.131), stepper seeker SHI-25/4 (passport PC3.250.041), resistors MLT-0,5, electrolytic capacitors K50-6, S1 button, S2 — elektrosvarka, S5 and switching (passport CALLED.604.019); switches S3, S6 — toggle TV 1-2, S4 — app 5П4Н; bulbs — 3.75 V.

The transformer is assembled from plates Ш15, the thickness of the dial 27 mm. Network 330 winding comprises turns of wire of PEL 0,1, secondary — 405 turns of PEL of 0.2, the third is 180 turns of PEL of 0.12, and the fourth 60 turns of wire of PEL 0,8.

 

Appearance the light display shown in figure 2.

 

Fig. 2. The light display.

 

V. NEILL vul, Ukraine, Chervonograd, Lviv region