Hardware Reference
In-Depth Information
Figure 9.11
Modes of operation for the 74C922: (a) asynchronous data
entry; (b) synchronous data entry; (c) synchronous handshaking
non-ferrous metals (the latter with reduced sensitivity). Hence metals such
as aluminium, copper, brass, and steel can all be detected. Typical sensing
distances for mild steel targets range from 1 mm for an object having dimensions
4
4
1 mm to 15 mm for an object measuring 45
45
1 mm. Note that
sensitivity is reduced to typically 35% of the above for non-ferrous metals such
as aluminium, brass, and copper.
