For assembly, you need a soldering iron and accessories that are not part of this kit. Also, the power supply is not included, we recommend using the
3xAA battery holder with switch and cover from our offer.
Important: Be careful with the orientation of the components where polarity matters (capacitor C6 and buzzer, as well as transistors Q1, Q2 and Q3 - the case orientation is drawn on the plate).
The package contains*:
- printed circuit board (PCB)
- resistors**: 220 kΩ (R1), 2.2 kΩ (R2)
- capacitors: 104 ceramic (C1, C4), 222 polyester (C2, C3), 100 µF electrolitic (C6)
- transistors: 9018 (Q1), 9015 (Q2), 9012 (Q3)
- 100-ohm potentiometer (W)
- buzzer (SPEAKER)
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* in brackets are the component designations on the PCB
** resistor ribbon colors:
- red, red, black, orange, brown = 220 kΩ ± 1%
- red, red, black, brown, brown = 2.2 kΩ ± 1%
