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Summary of Contents for Kitronik QUIZ BUZZER KIT
- Page 1 WHO ANSWERED FIRST? FIND OUT WITH THIS QUIZ BUZZER...
- Page 2 BUILD INSTRUCTIONS Before you put any components in the board or pick up the soldering iron, just take a look at the Printed Circuit Board (PCB). The components go in the side with the writing on and the solder goes on the side with the tracks and silver pads.
- Page 3 SOLDER THE THYRISTORS Solder the two thyristors into the board where it is labeled Q2 and Q3. These are marked with the part number 2N5061. Again make sure the device is the correct way around. The shape of the device should match the outline on the PCB.
- Page 4 ATTACH THE SWITCHES Attach the two push to make switches these have a red button. First cut and strip four short lengths of the wire supplied. Solder one to each of the two terminals on the switches. Then solder the other end of the wires on one of the switches to the PCB where it is marked ‘SW1’.
- Page 5 ADDING AN ON/OFF SWITCH If you wish to add a power switch, don’t solder both ends of the battery clip directly into the board, instead: Solder one end of the battery clip to the PCB, either black to ‘-’ or red to ‘+’. Solder the other end of the battery clip to the on / off switch.
- Page 6 CHECKING YOUR PCB Carefully check the following before you insert the batteries: Check the bottom of the board to ensure that: All holes (except the 4 large (3 mm) holes in the corners) are filled with the lead of a component. All these leads are soldered.
- Page 7 HOW THE QUIZ BUZZER WORKS 4.5V Reset LED1 LED2 The quiz buzzer is based around two flow through it turning on LED1. As a types of logic gates. There are two result of this the anode of the thyristor AND gates and one OR gate. Let’s first will be at a ‘low’...
- Page 8 UK by For more information on RoHS and CE please visit kitronik.co.uk/rohs-ce. Children assembling this product should be supervised by a competent adult. The product contains small parts so should be kept out of reach of children under 3 years old.
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