Global Specialties PB-503A User Manual Download Page 6

6

 

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Global Specialties

Do not Operate

If the instrument is damaged, appears to be damaged, or if any liquid, chemical, or other 

material gets on or inside the instrument, remove the instrument’s power cord, remove the 

instrument from service, label it as not to be operated, and return the instrument to Global 

Specialties for repair. Notify Global Specialties of the nature of any contamination of the 

instrument.

Not for Critical Applications

This instrument is not authorized for use in contact with the human body or for use  as a 

component in a life-support device or system.

Instrument covers must not be removed by operating personnel. Component 

replacement and internal adjustments must be made by qualified service 

trained maintenance personnel who are aware of the hazards involved when 

the instrument’s covers and shields are removed. Under certain conditions, 

even with the power cord removed, dangerous voltages may exist when 

the covers are removed. To avoid injuries, always disconnect the power 

cord from the instrument, remove all other connections (for example, test 

leads, probes, etc.), discharge all circuits, and verify there are no hazardous 

voltages present on any conductors by measurements with a properly 

operating voltage-sensing device before touching any internal parts. Verify 

the voltage-sensing device is working properly before and after making the 

measurements by testing with known operating voltage sources and test 

voltages. Do not attempt any service or adjustment unless another person 

capable of rendering first aid and resuscitation is present. Hazardous 

voltages may be present in unexpected locations in circuitry being tested 

when a fault condition in the circuit exists.

Use Correctly Sized Wires

Do not Touch Live Circuit

Use only standard 4 mm banana plugs when connecting to power supplies. 

Solid core wires no larger than 20 AWG must be used for connections to the 

solderless breadboards .

WARNING

CAUTION

Do not Attempt Servicing

Summary of Contents for PB-503A

Page 1: ...User Manual PB 503A Desktop Circuit Design Trainer...

Page 2: ...Components and Features 11 12 Specifications 13 14 Checking out the PB 503A 15 16 Breadboarding Techniques 17 Warranty and Service Information 18 2022 Global Specialties All rights reserved Unauthori...

Page 3: ...witch on the trainer Power off This is the AC mains connect disconnect switch on the trainer This symbol is used to denote an AC signal This symbol is used to denote the chassis ground This symbol is...

Page 4: ...to comply with these precautions or with warnings elsewhere in this manual violates the safety standards of design manufacture and intended use of the instrument Global Specialties assumes no liabili...

Page 5: ...able may result in injury or death Unless otherwise stated a ground connection on the instrument s front is for a reference of potential only and is not to be used as a safety ground This instrument i...

Page 6: ...ith the power cord removed dangerous voltages may exist when the covers are removed To avoid injuries always disconnect the power cord from the instrument remove all other connections for example test...

Page 7: ...ve RoHS 2 ANNEX III Exemption 6 c The PB 503A Circuit Design Trainer is a versatile time saving tool for circuit designers engineering technicians students and hobbyists A large breadboard area and a...

Page 8: ...luable hands on breadboarding techniques and build a solid foundation in circuit experimentation construction and analysis Experienced designers will find the PB 503A an invaluable instrument providin...

Page 9: ...eries Circuits Logic Gates Boolean Algebra Parallel Circuits Combinational Logic Circuits Combinational Circuits Flip Flops Current Control Digital Arithmetic Closed open shorts Counters Registers Swi...

Page 10: ...omes standard with a 250 V 1 5 A type T fuse for the 115 VAC setting In order to use with 230 VAC please slide the switch in the back to 230 VAC and replace the fuse with a 250 V 0 75 A type T fuse AC...

Page 11: ...sition or 70 of the operating voltage or higher when in the CMOS position The green LEDs will light when the voltages at the inputs are 0 8 V or less when in the TTL position or 30 of the operating vo...

Page 12: ...may be connected to other pieces of equipment via two BNC connectors This allows the use of shielded cable to minimize noise and interference Switches Two single pole double throw SPDT switches are pr...

Page 13: ...t circuit protected Output Impedance 600 except TTL Output waveforms Sine Square Triangle TTL Sine Wave Distortion 3 1 kHz typical TTL Pulse Rise fall time 25 ns drives 100 TTL Loads Square Wave Rise...

Page 14: ...s F2 1 k and 10 k uncommitted Speaker 8 0 25 W uncommitted Breadboards Removable breadboard Plate PB 3 with 2520 tie points with 200 additional bus strip tie points internally connected to power suppl...

Page 15: ...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 connect...

Page 16: ...relationship between the switch positions and the logic indicator display should remain the same regardless of the setting of the 1 3 15 volts V supply By using an ohmmeter you can check the potentiom...

Page 17: ...s Sometimes the only way to correct high frequency circuit problems is to shorten all circuit connections Be especially careful when inserting integrated circuits into the breadboard sockets Unless th...

Page 18: ...ot be covered by this warranty Global Specialties reserves the right to discontinue models change specifications price or design of this device at any time without notice and without incurring any obl...

Page 19: ...19 globalspecialties com Global Specialties...

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