You’re welcome Michael, I’m glad I can help !
So I constructed the 2 circuits and everything works as described in the manual.
Could it be possible that your light bulb is not the correct one ?
There’s always a possibility to open the boxes and replace the transistors. Use a sharp cutter to cut between the top and case.
I hope this is not needed.
Can you build an oscillator circuit to check the transistors ?
Have you read my forum posts ?
I always explain that we need a protective resistor in series with the lamp. This is a basic rule for experimenting and will save the delicate transistors.
Here the 2 circuits with protective resistors.
The BE junction is always delicate so please be attentive when experimenting.
Keep us informed !
- This reply was modified 2 years, 7 months ago by LectronFan.