Global Specialties PB-502 Advanced Portable Logic Design Trainer

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About Global Specialties PB-502 Advanced Portable Logic

The PB-502 Advanced Logic Design Trainer is a portable 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. Typical experiments and circuits that can be design utilizing the PB-502 include, but are not limited to the following. +12 volts + 5 percent 200mA max.-12 volts +5 percent 200mA max.+5 volts +5 percent 250mA max. Selectable output voltage of clock, pulser, logic switches. Input voltage thresholds of seven segment displays, logic indicators and Vcc tie point between 5 volts, TTL: and 12 volts, CMOS. 1 Hz +20 percent; 1 kHz +20 percent. 100 kHz +20 percent. Also user variable with external capacitor. Logic "1" output current 2mA at 4.0V min. (5 V/TTL); 4mA at 11.0 V min. (12 V/CMOS). Logic "0" output current 2mA at 0.1V max. (5 V/TTL); 5 mAat0.1V max (12 V/CMOS). Two fully debounced pushbuttons with true logic and complementary outputs. Logic "1" output current 2 mA at 2.5 V min. (5 V/TTL); 2 mA at11.0 V min. (12 V/CMOS)Logic "0" output current 2 mA at 0.4V max. (5 V/TTL); 5 mA at 0.4Vmax (12 V/CMOS). 8 SPDT switches select output of Vcc or ground. Output current, all cases: 200 mA max. 8 LEDs buffered by two four-bit latches with separate enables. Input impedance, all inputs: 100 k ohms. Measures 7-1/2" width by 2-19/32" height by 10" depth.