User's Manual

UT5 - 8
Phase 3: PUTTING THE UT5 TO WORK:
Now, use some hookup wire, speaker wire, etc. to install the input and output wires that you will need for your
application:
 Terminal A: OUTPUT (used in all applications)
 Terminal B: RESET (see text)
 Terminal C: POSITIVE PULSE (see text)
 Terminal D: NEGATIVE PULSE (see text)
 Terminal E: GROUND (used in all applications) (install TWO wires here: a black wire for negative DC power and
an additional wire for connection to the output device)
 Terminal F: +5 to 15 VOLTS DC SUPPLY (used in all applications; red hookup wire suggested)
TESTING:
The kind of test you run depends on your application. The output device for the timer mode can be as simple as
hooking up your VOM or a small bulb or LED between terminals A and E. A speaker is the usual output device for
oscillator mode (see Application drawings).
When using the timer configuration, a negative or positive pulse may be used to trigger the timer. The positive pulse
should be at least 1 volt, and the negative pulse should be at least 1/2 the DC supply voltage. The output (point A) can
sink or source current up to 100 mA maximum. Timing for either mode is changed by adjusting the values of either R3
(or R4) or C1.