Question: Working through Learning the Art of Electronics, Hayes T, I'm stuck trying to build the diode clamp in Figure 3L.7 on page 137, as below:

[![enter image description here](https://i.stack.imgur.com/dGApT.png)](https://i.stack.imgur.com/dGApT.png)

The text says to, "*Drive it with a sinewave from your
function generator... ...and observe the output.*" So presumably +ve from the function generator connects to "in", +ve from the power supply to "+5 volts", and scope probe to "out". 

Having searched the web and studied various clamp schematics, I still can't work out the answer to my question which is, where to put the ground leads from function generator, power supply and oscilloscope?

Thanks

David

Answer: 
The schematic is missing a ground connection which would connect the ground of the power supply, function generator and oscilloscope probe together.
In the place which´s written 5 Volts you should put the positive of your power supply. The negative terminal would be the ground, along with all other grounds coming from function generator and oscilloscope.