Power supply test apparatus having means to repeatedly short the power supply

Claim 1

THE COMBINATION FOR DYNAMICALLY LOADING AND MONITORING THE OPERATION OF A POWER SUPPLY INDEPENDENTLY OF FREQUENCY VARIATION OF THE ENERGIZING VOLTAGE APPLIED TO THE POWER SUPPLY COMPRISING: AN INPUT TERMINAL AND A REFERENCE POTENTIAL TERMINAL ADAPTED TO BE COULED TO THE OUTPUT TERMINALS OF AN INDEPENDENTLY ENERGIZED POWER SUPPLY; A VARIABLE IMPEDANCE ELECTRICALLY CONNECTED AT ONE END TO SAID INPUT TERMINAL AND AT THE OTHER END TO SAID REFERENCE POTENTIAL TERMINAL; TRIGGERABLE WAVEFORM DISPLAY MEANS ADAPTED TO BE COUPLED TO SAID POWER SUPPLY FOR MONITORING THE VOLTAGE OF THE POWER SUPPLY; VARIABLE FREQUENCY PULSE GENERATING MEANS GENERATING PERIODIC PULSE SIGNALS FOR REPEATEDLY TRIGGERING SAID DISPLAY MEANS AND CHANGING THE IMPEDANCE OF SAID VARIABLE IMPEDANCE; FIRST AND SECOND INDIVIDUAL DELAY MEANS ELECTRICALLY CONNECTING THE GENERATING MEANS TO THE INDICATING MEANS AND TO THE VARIABLE IMPEDANCE MEANS, RESPECTIVELY; AND SIGNAL CONTROL MEANS ELECTRICALLY CONNECTED TO SAID PULSE GENERATING MEANS FOR CONTROLLING THE WIDTH OF THE PULSES APPLIED TO SAID VARIABLE IMPEDANCE; WHEREBY THE LOAD CURRENT DRAWN THROUGH SAID POWER SUPPLY IS REPEATEDLY VARIED AT A SELECTED RATE AND PULSE TIME WIDTH FOR INDICATING THE DYNAMIC REGULATION OF SAID POWER SUPPLY.