GeekDOn
Newbie level 3
Hi All
i have a problem with my full wave precision rectifier using LM358 , i observe lower voltages than what i have as input,
firstly i drew the circuit on a simulator and fed in dc as input with a variable resistor connected, the output measured is the same as the DC input ,
when i built the hardware i put an 8V battery as input , but on the output of the LM358 my multimeter reads voltages of around 3,5 Volts, i resorted to building a more simpler half wave rectifier which does the same, the question is , where did i drop that much volts?
When i put power on pin 8 of the LM358, with nothing on the Input (inverting input) i get some voltage of ~89mV , i cannot be generating power from nothing , where is the voltage coming from? since i do not have any input ?
:sad:
i have a problem with my full wave precision rectifier using LM358 , i observe lower voltages than what i have as input,
firstly i drew the circuit on a simulator and fed in dc as input with a variable resistor connected, the output measured is the same as the DC input ,
when i built the hardware i put an 8V battery as input , but on the output of the LM358 my multimeter reads voltages of around 3,5 Volts, i resorted to building a more simpler half wave rectifier which does the same, the question is , where did i drop that much volts?
When i put power on pin 8 of the LM358, with nothing on the Input (inverting input) i get some voltage of ~89mV , i cannot be generating power from nothing , where is the voltage coming from? since i do not have any input ?
:sad: