Suggested by General Electric in a 1970 documentation, this circuit makes use of some components of the time, in the case of transistors. The circuit detects smoke by the transparency changing of the air.
This circuit can provide a maximum load current of 1 A. The integrated circuit must have a...
This control for 12 V drills was found in a 90s Elektor. The components are current, and Q1 can be...
Figure 1 shows how the 4029 can be connected to count up to 10 and also up to 18. If pin 9 is...