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The PB-502 is a robust instrument capable of satisfying many requirements arising in the design and study of digital logic circuitry. The PB-502's selectable operating voltage further aids its versatility by allowing the trainer to be used in either TTL or CMOS operating mode. The trainer contains three integral power supplies and input/output devices that simplify the construction of a wide range of circuits.
Typical circuits that can be built on the PB-502 include: Operational amplifiers, comparators, A to D converters, gates, and counters. The PB-502 can also interface directly to a microprocessor. The PB-502 is housed in a tough, molded plastic carrying cases with an integral hinged cover which stacks neatly for storage.
5 V @ 250 mA
Input voltage thresholds of seven segment displays, logic indicators and Vcc tie-points between 5 V, TTL and 12 volts, CMOS
Logic "1" output current 2 mA @ 4 V min (5 V/TTL)
Logic "1" output current 4 mA @ 11 V min (12 V/CMOS)
Logic "0" output current 2 mA @ 0.1 V max (5 V/TTL)
Logic "0" output current 5 mA @ 0.1 V max (12 V/CMOS)
Output current, all cases: 200 mA max
Input impedance, all inputs: 100 kΩ
Input impedance, all inputs: 100 kΩ
Each tie-point has two solderless connection points.
Ground, +5 volts, Vcc, and clock out have four connection points each.
All tie point functions are labeled on the front panel.
The UBS-100 can accomodate up to eight 14-pin DIP ICs with five tie-points per pin plus eight power rails with 25 tie points each