Global Specialties PB-503 - Manual - Manual (Page 14)

14
BREADBOARDING TECHNIQUES
This section contains information which may prove useful when constructing circuits
using the PB-503. While there are no hard and fast rules for breadboarding, the
following tips may save time and trouble.
Unless a circuit is being prepared for a demonstration or display, avoid cutting
component leads very short. While short wires and leads may look neat, the clipped
components will only fit into a limited "span" of connector sockets, limiting the use of the
component. It is perfectly permissible to use untrimmed components while exploring
different circuit possibilities. The only time short leads may be necessary is when
operating at higher frequencies and experiencing mysterious malfunctions. Sometimes
the only way to correct high frequency circuit problems is to shorten all circuit
connections.
Be cautious when using components which have been removed from a tape reel used
in automatic insertion equipment. Suppliers of surplus components often sell
components which are taped together in small batches. Removing the components from
the tape does not always remove the adhesive from the leads of the components.
Placing a formerly taped component into a socket connector may result in a poor
electrical connection and, worse still, leave tape adhesive in the socket. Avoid this
problem by either carefully cleaning taped component leads, clipping the taped portion
of the lead off, or avoiding the use of taped components altogether.
Be especially careful when inserting integrated circuits into the breadboard sockets.
Unless the IC pins are straight, it is very easy to crush the pin into a zigzag shape or
fold the pins underneath the body of the IC. Either way the result is a bad connection or
no connection at all.
Always use solid wire for breadboard connections. When stripping the wire ends, be
careful not to strip more than about three-eighths of an inch of insulation from the wire.
Too much bare wire may result in unintentional connections near the wire end.
After you have built up a few circuits, you will have a good collection of pre-stripped
jumper wires. Save them. By reusing these wires, you can save even more time and
effort in assembling future circuits. Pre-formed wires in various sizes are also available
from Global Specialties (please visit web site for available options and accessories).