70mA current regulator (CB8821E)

This circuit was found in a 1968’s Motorola documentation. The transistor is from that time. The load can have resistances between 10 and 80ohm.

| Clique na imagem para ampliar |

Electronic Target Shooting (CB16586E)
This circuit was found in a 1987 publication, but it can still be easily assembled today as the...
0 to 100 degrees Celsius Thermometer (CB1486E )
This circuit uses a common diode as sensor. The output goes from 0 to 10 V with the temperature change in...
Audio Oscillator 2 (CB12907E)
This circuit, from an old publication, can also use modern transistors. Note that the unit is...