
210 TOOLS AND TEST EQUIPMENT
Photo
15 CMOS/TTL logic
puiser which may he used ίο
inject pulses into digital circuits.
This device is similar in
appearance to a logic probe.
Maplin order code: YU56L
(matching logic probe, Map/in
order code: FY73Q)
Choosing a logic probe
Several types of logic probe are commonly available ranging in price from
around £10 to well over £50. As with most items of test equipment you
get what you pay for; the more expensive instruments usually offer a
performance which is significantly better than their cheaper counterparts.
In particular, a distinction can be made between logic probes which are
optimized for one