B&K 1652, 1651A instruction manual Applications, Electronics Servicing, Electronics Manufacturing

Page 33

APPLICATIONS

GENERAL

The Model 1651A power supply has a very wide variety of applications in electrical and electronics servicing, engineering laboratories, manufacturing and testing facilities, schools, and home hobbying. The “A” and “B” power supply outputs are fully adjustable from 0-to-24 volts and 0-to-0.5 amps and the FIXED 5 V supply has a current capability of 0-to-4 amps. This flexibility makes it suitable for most applications requiring a dc power source.

ELECTRONICS SERVICING

Most electronics troubleshooting and repair is performed on a test bench. This power supply can provide the dc power source to operate a module or circuit board on the test bench when it is removed from its parent equipment. It can be used to power portable, battery-operated equipment and check the effect of low battery voltage. It can power some vehicular equipment such as tape players, auto sound systems, CB radios, etc. on the test bench. Parallel tracking supplies up to 1 amp.

Most automobiles and other vehicles use 12-volt electrical systems. Although the electrical system is normally referred to as a 12-volt system, actual battery voltage when fully charged is approximately 13.8 volts. The power supply may be set to

13.8volts for servicing equipment from vehicles with 12-volt electrical systems. Some trucks use a 24-volt electrical system; bench testing of equipment from these systems should be performed at approximately 28 volts.

Some servicing applications require the injection of a variable dc voltage for certain tests, such as checking the effect of AGC bias in a television receiver. This requires an isolated dc power supply, such as the Model 1651A. The equipment being tested may contain its own power supply and operate from ac power. A dc voltage may already be present in the circuit. One polarity of the power supply output is floated to an appropriate point in the circuit, such as the emitter of a transistor. The other polarity of the power supply output is then applied to another point in the circuit, such as the base of that transistor. Varying the power supply voltage then varies the dc bias on the stage, and the effects may be noted. A series limiting resistor is often used to protect the circuits from overdissipation.

ELECTRONICS MANUFACTURING

In electronics manufacturing facilities, the power supply is often used as a dc power source while testing and adjusting modules, subassemblies, and complete units in the production and assembly area or in the quality control area. The instrument can be used in incoming inspection as a dc power source for testing purchased components and subassemblies.

This power supply is particularly well suited for manufacturing applications because of its ease of operation and its continuous duty rating. When load current or total power dissipation are among the main characteristics to be measured, the total load current and voltage are simultaneously displayed on the panel meters. The current limit can be set so that all units which do not meet the load

29 current specification will cause the CONSTANT CURRENT indicator to light, and the unit can be rejected.

Page 32 Page 34
Image 33
Page 32 Page 34
Contents Instruction Manual Test Instrument Safety DC Power Supply Table of Contents Introduction Introduction Features Overload Protection Isolated OutputReverse Polarity Protection HOOK-UP CablesB Supplies SpecificationsGeneral Fixed 5V SupplySupply Controls and Indicators Controls and IndicatorsControls and Indicators Constant Current Indicator Line Voltage Select Switches. Combination Fixed 5V Supply Terminals and Indicator Rear Panel ControlsRear panel controls Equipment Precautions Safety PrecautionsOperating Instructions Independent USE of a or B SupplyOperating Instructions Hook-up Operating Instructions Independent operation grounding possibilities sheet 2 Setting Current Limit Setting Current limit Series Tracking Operation Constant voltage/constant current characteristicOperating Instructions Operating Instructions Operating Instructions Parallel Tracking Operation Parallel tracking operation grounding possibilities sheet 1 Parallel tracking operation grounding possibilities sheet 2 Fixed 5 V Power Supply Operation Grounding possibilities for fixed 5 V power supply sheet 1 Grounding possibilities for fixed 5 V power supply sheet 2 Operating Instructions Applications Electronics ServicingElectronics Manufacturing Electronics Design LAB Battery ChargingElectronics Education Split SupplyPage Page Page Page Page Page Fuse Replacement MaintenanceService Information Limited One-Year Warranty Test Instrument Safety Manual DE Instrucciónes Fuente DE Poder DE CD Triple Seguridad DEL Instrumento DE Prueba Advertencia Instrucciones DE Operación Seguridad DEL Instrumento DE PruebaIntroduccion Fuente Fija DE Salida TripleDOS Fuentes DE O a Característica DE Rastreo UnicaSalida Aislada Protección Contra SobreflujoProtección DE Polaridad Inversa Cables Fuentes a Y B EspecificacionesGeneral Controles E Indicadores Figura 1. Controles e indicadores del panel frontal Controles E Indicadores DE LA Fuente B Indicador Constant CurrentControles DEL Panel Trasero Indicadores Y Controles DE LA Fuente DEFigura 2. Controles del panel trasero USO Independiente DE LA Fuente a O B Precauciones Para SeguridadInstrucciones DE Operación Page Page Figura 4. Operación de voltaje constante típica Operación de corriente constante típica Operación DE Rastreo EN Serie Característica de voltaje constante/corriente constantePage Page Instrucciones DE Operación Operación DE Rastreo EN Paralelo Page Page Operación DE LA Fuente Fija DE Page Page Instrucciones DE Operación Manufactura Electrónica Servicio ElectrónicoEducación EN Electrónica Laboratorio DE Diseño ElectrónicoCarga DE Baterias Fuente DivididaAplicaciones Aplicaciones Aplicaciones Aplicaciones Aplicaciones Aplicaciones Mantenimiento Información de Servicio Garantía Limitada de Un Ano Seguridad DE EL Equipo DE Prueba Declaration of CE Conformity Savi Ranch Parkway Yorba Linda, CA 2005 B&K Precision Corp
Top Page Image Contents