Voltage offset design problem? he figure below is of a simple frequency doubler,
ID: 2082558 • Letter: V
Question
Voltage offset design problem?
he figure below is of a simple frequency doubler, The accompanying graph shows that the output signal is offset by 35mV, and its amplitude reduced. Alter or add to the design of this circuit to: a) Set the offset of the output signal to 0 volts. b Increase the amplitude of the output signal to 100m 120mV 100mV 80mV 60mV 40mV 20mV OmV 200mV 40mV 60mV -80mV 100mV V 120mV 6ms 10ms 12ms 14ms Oms 2ms 4ms 8ms 16ms 18ms 20ms 22ms Frequency 10k. Doubler V2 tran 0.1 0 le 6 RI Ul D2 Vo 10k. IN914 LT1007 vi SENE(0.1.432) D1 IN914Explanation / Answer
Op-amp has one facility at pin no. 5 offset null you just to connect a variable resistance between pin no. 4,5,6. Use variable potentiometer and connect as shown in attached figure. Before connecting supply to opamp check the voltage value at pin no. 5 it will show some value in fraction then adjust potentiometer value until come zero but make sure you will do all this before applying supply to opamp.
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