1-1D E S C R I P T I O N

1-2 This power supply, Figure 1-1,is completely transistorized and suitable for either bench or relay rack operations, The dual supply consists of two independently controlled dual range sections; both identical to the other. Each section can furnish either a 0-40 Volt output at 300mA or a 0-20 Volt output at 600mA. Each section has its own front panel meter and operating controls, The operating modes (40V or 20V) are selected by means of the front panel RANGE switches, The VOLTAGE controls permit each output voltage to be continuously adjusted throughout either output range.

Figure 1-1. DC Power Supply, Model 6205B

TM 11-6625-2965-14&P

may be programmed from a remote location by means of an external voltage source or resistance.

b. Remote Sensing. The degradation in regulation which would occur at the load because of the voltage drop which takes place in the load leads can be reduced by using the power supply in the remote sensing mode of operation.

c.Series and Auto-Series Operation, Power supplies may be used in series when a higher out- put voltage is required in the voltage mode of op- eration or when greater voltage compliance is re- quired in the constant current mode of operation, Auto-Series operation permits one knob control of the total output voltage from a “master” supply.

d.Parallel and Auto-Parallel Operation, The power supply may be operated in parallel with a

similar

unit

when greater

output current capability

is required.

Auto-Parallel

operation permits one

knob control of the total output current from a

“master”

supply.

 

e.Auto-Tracking. The power supply may be used as a “master” supply, having control over one (or more) “slave” supplies that furnish various volt- ages for a system.

1-6 SPECIFICATIONS

1-7 Detailed specifications for the power supply are given in Table 1-1.

1 - 8 O P T I O N S

1-3 Both sections of the supply are of the regu- lated, Constant Voltage/Current Limiting, type. Each section is fully protected from overloads by the fixed current limit which is set by means of an internal adjustment.

1-4 Both front and rear terminals are available for each section. Either the positive or negative terminals may be grounded or the supply can be operated at up to a maximum of 300 Volts off ground. Each meter can be used to measure either output voltage or output current in one of two ranges. The voltage or current ranges are selected by the applicable METER switch on the front panel.

1-5 Two sets of programming terminals, located at the rear of the unit, allow ease in adapting to the many operational capabilities of the supply. A brief description of these capabilities is given below:

a, Remote Programming, The power supply

1-9 Options are factory modifications of a standard instrument that are requested by the customer. The following options are available for the instrument covered by this manual, Where necessary, detailed coverage of the options is included throughout the manual.

Option No.

Description

07Voltage 10-Turn Pot: A single control that replaces both coarse and fine voltage controls and improves output nettability.

11Overvoltage_Protection_“Crowbar”:

A completely separate circuit for pro- tecting delicate loads against power supply failure or operator error. This independent device monitors the out-

put voltage and within 10µsec imposes

avirtual short-circuit (crowbar) across the power supply output if the preset

1 1