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120_1_FREQUENCY_RANGE_ASTABLE

2015-03-20 07:44  
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120_1_FREQUENCY_RANGE_ASTABLE
Modified astable has frequency change of 5 to 600 millisec at 50% duty cycle, with symmetry variable by 97.5%. Can be used as pattern source for generating keyed d-c or keyed tone signals for testing digital communications and data processing equipment.-Wide Range Variable Multivibrator, Electronic Circuit Design Handbook, Mactier Pub. Corp., N.Y., 1965, p 109.