With this circuit it is possible to visualize the characteristic curve of a component on an oscilloscope. The circuit is from a Popular Electronics from the 90s.
This circuit uses only passive components calculated for the desired frequency. We found it in an...
This fourth-order circuit was found on an 80's Radio Electronics. The power supply must be...
This simple circuit controls the brightness of an LED from LDRs, NTCs, PTCs or other resistive sensors....