B&K 1651A, 1652 Electronics Design LAB, Electronics Education, Battery Charging, Split Supply

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APPLICATIONS_______________________________________________________________________________________

ELECTRONICS DESIGN LAB

The technician or engineer working in an engineering laboratory requires a dc power supply to power breadboard and prototype circuits. This power supply is ideal because it monitors output current and voltage, limits current to protect the circuit, is adjustable over a wide range, and has excellent regulation and very low ripple.

Use of the instrument in an engineering laboratory is very similar to that described for servicing electronics equipment and modules, except that lower currents may be prevalent when powering individual circuits. The current limiting feature is very valuable in this application because it can protect unproven circuits from damage.

ELECTRONICS EDUCATION

The student in an electronics curriculum may use the power supply for powering equipment and circuits as previously described for all other applications. In addition, the power supply can be used in the classroom laboratory to conduct experiments in fundamental electronics. In learning Ohm’s law, for example, the relationships of resistance, current, and voltage are easily demonstrated by the use of a power supply.

BATTERY CHARGING

The power supply can be used as a battery charger to restore the charge in rechargeable batteries such as lead-acid, nickel- cadmium, and some alkaline types. Refer to the battery manufacturer’s charging specifications for proper voltage and current settings.

Charging information is sometimes printed on the batteries. Battery charging, at least initially, requires the constant current mode of operation. Before connecting the power supply to the battery, preset the VOLTAGE controls to the fully charged terminal voltage specified by the battery manufacturer. Turn off the power supply while connecting the battery. Observe proper polarity and connect as for constant current operation. Adjust the CURRENT control for the maximum charging current specified by the battery manufacturer (If the maximum charging current is greater than the power supply’s maximum load current, set the CURRENT control to maximum). The CONSTANT CURRENT indicator will light and the battery will charge at the preset current limit. As the battery approaches full charge, its terminal voltage will approach that of the power supply output and the charging current will taper off. The power supply may automatically switch to constant voltage operation. When this occurs, the power supply will continue to provide a trickle charge.

SPLIT SUPPLY

Frequently, “split power supplies” are required for amplifiers and other electronic circuits. The Model 1651A is ideally suited for “split power supply” operation. This supply can be configured to provide two positive voltages with a common negative, two negative voltages with a common positive, or one positive and one negative with a common ground. In addition, each of these configurations can be obtained with identical or differing voltages.

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Contents Instruction Manual Test Instrument Safety DC Power Supply Table of Contents Introduction Introduction Features Reverse Polarity Protection Isolated OutputOverload Protection HOOK-UP CablesSpecifications B SuppliesFixed 5V Supply GeneralControls and Indicators Supply Controls and IndicatorsControls and Indicators Constant Current Indicator Fixed 5V Supply Terminals and Indicator Rear Panel Controls Line Voltage Select Switches. CombinationRear panel controls Operating Instructions Safety PrecautionsEquipment Precautions Independent USE of a or B SupplyOperating Instructions Hook-up Operating Instructions Independent operation grounding possibilities sheet 2 Setting Current Limit Setting Current limit Constant voltage/constant current characteristic Series Tracking OperationOperating 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 Electronics Servicing ApplicationsElectronics Manufacturing Electronics Education Battery ChargingElectronics Design LAB Split SupplyPage Page Page Page Page Page Maintenance Fuse ReplacementService Information Limited One-Year Warranty Test Instrument Safety Manual DE Instrucciónes Fuente DE Poder DE CD Triple Seguridad DEL Instrumento DE Prueba Advertencia Seguridad DEL Instrumento DE Prueba Instrucciones DE OperaciónIntroduccion DOS Fuentes DE O a Salida TripleFuente Fija DE Característica DE Rastreo UnicaProtección Contra Sobreflujo Salida AisladaProtección DE Polaridad Inversa Cables Especificaciones Fuentes a Y BGeneral Controles E Indicadores Figura 1. Controles e indicadores del panel frontal Indicador Constant Current Controles E Indicadores DE LA Fuente BIndicadores Y Controles DE LA Fuente DE Controles DEL Panel TraseroFigura 2. Controles del panel trasero Precauciones Para Seguridad USO Independiente DE LA Fuente a O BInstrucciones DE Operación Page Page Figura 4. Operación de voltaje constante típica Operación de corriente constante típica Característica de voltaje constante/corriente constante Operación DE Rastreo EN SeriePage Page Instrucciones DE Operación Operación DE Rastreo EN Paralelo Page Page Operación DE LA Fuente Fija DE Page Page Instrucciones DE Operación Servicio Electrónico Manufactura ElectrónicaCarga DE Baterias Laboratorio DE Diseño ElectrónicoEducación EN Electrónica 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