This preamplifier for phonographic capsules using FET was found in 90s American documentation. Consumption is very low. The power can be obtained from the amplifier circuit with which it works.
This circuit can be used as a clok in digital applications. Power supply is 5-V and the pins for...
The MC15555 of this circuit is the old version of the common 555. What this circuit does is...
This circuit was indicated in an old American publication to serve as a Laser alarm system as a...