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The sound generator "GZ-1A" was produced since 1952. He is one of the first serial domestic sound generators. In 1957, the generator was modernized and became known as "GZ-1M", and since 1962 simply "GZ-1". In 1966, another upgrade with the same name (the last image from the directory), but it was already a completely different SG, there is no data on it. All sound frequency generators are intended for use as sources of sinusoidal voltage of sound frequency in the conditions of laboratories, factory workshops and repair shops. Technical characteristics of generators (except for the series in 1966): The range of generated frequencies "GZ-1" and "GZ-1M" - 18 ... 18000 Hz. "GZ-1A" - 25 ... 17000 Hz. The subranges "GZ-1" and "GZ-1M" 1 - 18 ... 180 Hz, 2 - 180 ... 1800 Hz, 3 - 1800 ... 18000 Hz. "GZ-1A" - 1 - 25 ... 130 Hz, 2 - 130 ... 700 Hz, 3 - 700 ... 3600 Hz, 4 - 3600 ... 17000 Hz. All generators have a margin of frequencies at the edges of the subranges ~ 10%. The accuracy of the installation of audio frequency ± 5%. Output power at a load of 600 ohms not less than 1 watt. The limits of output voltage adjustment are 0 ... 25 V. The maximum nonlinear distortion coefficient is no more than 2%. Uneven frequency response over the entire frequency range ± 2 dB. Power - network 50 Hz / 127, 220 V. The power consumed from the network is not more than 75 V · A. Overall dimensions of the device 360x300x210 mm. Weight 16 kg.
Based on information from collection of Valery Khartchenko