FIELD: analog computer engineering; verifying reactor reactivity measuring instruments. SUBSTANCE: pulse-current simulator has feedback measuring amplifier whose feedback circuit is set up of six RC circuits, inverting amplifier, group of input resistors with switching keys, current generating resistors with respective keys, reactivity sign selector switch, voltage-frequency converter, fission-chamber current pulse shaper, and high-voltage amplifier. Measuring amplifier and inverter are connected in series. Inverter output is connected to inputs of high-voltage amplifier and voltage- frequency converter. Output of high-voltage amplifier is connected to keys of current generating resistors and converter output, to input of current pulse shaper that functions as frequency output of simulator. EFFECT: enlarged functional capabilities of simulator. 1 cl, 1 dwg
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