High-Low Sensor (MEC180E)

Figure 1 - High-low sensor.

Motor Speed Control (CB26003E)
Found in the February 1997 Electronics Now magazine, this circuit controls motors according to the...
Model railway alarm (CB22528E)
This circuit detects traffic problems on a miniature railway by triggering an alarm. The circuit was...
FET Impedance Converter (CB14898E)
This circuit uses 3 FETs to convert the high impedance signal from a crystal or ceramic microphone to a...