Constant current source (CB8822E)

This 2mA source was found in a 1968’s Philips documentation. The transistor may be the BC549.

| Clique na imagem para ampliar |

Half Hertz Bandpass Filter (CB25360E)
This 0.5 Hz filter was found in the December 1990 issue of Radio Electronics magazine. The power...
Switching Regulator 78xx (CB15162E)
This circuit was obtained in the SGS manual of linear integrated circuits of 1982. The maximum...
Linear LED Control (CB11573E)
This circuit allows linear brightness control of an LED from an input voltage. The power supply must...