GENERATING DEVICE FOR SPEED EQUIVALENT SIGNAL

PURPOSE:To perform a test motion coinciding with a real motion, by a method wherein an internal impedance of a speed equivalent signal generator is caused to coincide with a real speed signal source impedance. CONSTITUTION:An equivalent sine wave signal generating part 1 outputs a signal equivalent to a signal source generating a frequency paralleling a speed. The output signal is transferred to a device 4 to be tested through a power amplifier 2 and an output transformer 3. A series reactance 17 is connected between the output transformer 3 and the device 4 to be tested so that an impedance from the side of the device 4 to be tested is equal to that of the speed signal source. This permits the equivalent signal to be generated in a shape which prevents damaging of a load characteristic.