This circuit can measure the peak level of AC signals regardless of their waveform. It is independent from the signal
direction. Both positive and negative going peaks deliver the same result. As you can see in the block diagram, block
A is a rectifier for the positive going peaks while block B is a rectifier for the negative going peaks.
The rectified peaks are then inverted in block C and added to the rectified signal coming from block A.
A voltage of around 600 mV appears at the circuit’s point C.
The highest peak value appears at the resistor R16 of the output terminal. A meter can be connected at this point to display the measured value.
Printed Circuit Layout
Parts Placement Layout
External Wiring Layout
Electronic Circuits volume 1.0 - Circuit Nr. 2
The complete data of the electronic circuit described above can be found in the following book and is available from Amazon.com.
Click on the image to view the book.