PB-503A and PB-505A circuit design trainers feature function generator with digital display for accurate settings.

Can dial in frequency to nearest 0.1Hz. Generator provides 100kHz signal in two ranges. Outputs 10Vp-p into 600Ω load (20Vp-p into open circuit). Choose from sine, square, triangle, and TTL waveforms. Reportedly ideal for classroom usage. Combine elements of benchtop lab, including power supply, function generator, and breadboard. Both are equipped with triple output DC power supplies; removable breadboard for multiple users; two digital pulsers; high- and low-buffered logic indicators; 8 channel logic switches; 2 SPDT switches; 16 LEDs for logic indicators; 2 BNC connectors; 2 potentiometers (1kΩ and 10Ω); speaker. Have switchable input to work in 120 VAC and 240 VAC environments. Additional features on PB-505A: AC power supply (12.6 VAC center-tapped); logic probe; BCD to 7-segment displays.

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