Gain 1000 Amplifier (CB8998E)

This circuit was obtained in a 90’s documentation. The operational amplifiers are from that time.

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Alarm siren (CB8438E)
This circuit with the 555, was obtained in a 90s American documentation. The signal must be...
CMOS Monostables (CB24777E)
In the figure we have 3 CMOS monostable circuits that can be used as anti-bounce switches. The...
1 kHz Band Pass Filter (CB19689E)
This filter has the components calculated for the frequency of 1 kHz but can be changed. The input...