How Much Static Does It Take?
When you feel a static shock, you are feeling the generation of 3,000 volts of electricity. You will feel the electrostatic discharge of 3,000 volts, but smaller charges can damage electronic components, and you won't even be aware that a discharge has occurred. Some more sophisticated components can be damaged by charges as low as 10 volts. You should be aware of the relative sensitivity to ESD damage of the devices you may be working on/with.
Even moving objects on your workstation can generate hundreds of volts. The amount of static electricity also depends on the humidity of the environment. Low humidity conditions such as those created when air is heated in the winter will also promote the generation of significantly high voltages which can damage components.