Dial Signal Detector (CB21274E)

This circuit was found at Electronics Now. It can be used as a shield detector for dial signals in an automation project.

| Clique na imagem para ampliar |

Variable Power Source 1.2V - 25V x 3 A (CB13012E)
The power supply shown in the figure provides output voltages in the range of 1.2 to 25 V with...
0 to 250 V x 1A Power Supply (CB19130E)
The components used in this regulator project from an old documentation are not very common today....
Alternating Flasher LM3909 (CB14281E)
The circuit shown in the figure makes use of an LM3909, a low consumption and low voltage IC. The...