CMOS Driver RS232 (CB6518E)

We found this circuit in an 80's EDN. The circuit makes use of a MAX680, being given a table with its operating characteristics.

| Clique na imagem para ampliar |

Voltage Drop Alarm (CB1530E)
This circuit goes into operation producing a sound on a small speaker when the supply voltage...
Speaker Protector (CB25397E)
We found this circuit that protects speakers against current surges that occur when the amplifier is...
Bipolar Transistor Colpitts Oscillator (CB4582E)
The oscillator shown in the figure can generate signals between 3 and 15 MHz approximately, depending...