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セキュリティセンサー Elektor TAPIRのPDF コンストラクション・マニュアルをオンラインで閲覧またはダウンロードできます。Elektor TAPIR 15 ページ。 E-smog detector kit
Elektor TAPIR にも：コンストラクション・マニュアル (9 ページ)

Figure 9. PCB 2 and PCB 4 removed from the panel.

Next, fit the following components on PCB 3 using the previously

described soldering method:

1. C3 (10 µF; no marking, large SMD)

2. R1 & R4 (100 kΩ; marking: 1003)

3. R2 & R3 (10 kΩ; marking: 1002)

4. R5 (1 kΩ; marking: 1001)

5. C1 (10 nF; no marking, small SMD)

6. T1 (MMBT3904; marking: 1AM)

7. T2 & T3 (BC847, marking: 1F or 1FW)

Figure 10. Detail of PCB 3 with C1, C3, R1–R5, T1–T3 fitted.

Elektor "TAPIR" E-Smog Tester Kit | Construction Manual

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Temporarily connect a 1.5-V supply voltage to the points indicated in

Figure 11 below.

Figure 11. AA battery connected as a temporary 1.5 V power supply. Note polarity!

Figure 12. Detail of the temporary battery connection.