walters
Advanced Member level 2
troubleshooting formulas
What are some basic troubleshooting formulas to use when u troubleshoot circuits ?
What are some critical troubleshooting formulas u must use when doing troubleshooting any circuit?
1.) Use Ohms law to calculate resistor voltages,voltage drops,currents and resistor power dissipation
to find the wattage value.
2.) calculating AC ripple peak to peak voltage and ripple frequency in the power supply
3.) calculating voltage follower,inverting,non-invertering IC op-amp gains and voltage output values
(used for if the IC chip is good and there is signal on the output pin of the IC put the gain is not
the right value then there is something wrong resistance,capacitance or diode in that stage)
4.) Transistor gains and voltage output also to verify its working in operation point
5.) calculate the RMS AC power using the AC power formula
( AC voltage * to the 2nd power then divided by the speaker ohms)
6.) any others can u guys think of please?
How do u calculate the bias voltages? so u know what to set the trimmer pots in the range of? if they don't
tell u in the schematic what values are how would u find what the bias voltages are please?
Can u just put your oscilloscope probe on the output of the IC chip,transitor,tube and adjust the trimmers or biasing resistors until u see a balanced symmetrical waveform? instead of calculating the biasing values?
What are some basic troubleshooting formulas to use when u troubleshoot circuits ?
What are some critical troubleshooting formulas u must use when doing troubleshooting any circuit?
1.) Use Ohms law to calculate resistor voltages,voltage drops,currents and resistor power dissipation
to find the wattage value.
2.) calculating AC ripple peak to peak voltage and ripple frequency in the power supply
3.) calculating voltage follower,inverting,non-invertering IC op-amp gains and voltage output values
(used for if the IC chip is good and there is signal on the output pin of the IC put the gain is not
the right value then there is something wrong resistance,capacitance or diode in that stage)
4.) Transistor gains and voltage output also to verify its working in operation point
5.) calculate the RMS AC power using the AC power formula
( AC voltage * to the 2nd power then divided by the speaker ohms)
6.) any others can u guys think of please?
How do u calculate the bias voltages? so u know what to set the trimmer pots in the range of? if they don't
tell u in the schematic what values are how would u find what the bias voltages are please?
Can u just put your oscilloscope probe on the output of the IC chip,transitor,tube and adjust the trimmers or biasing resistors until u see a balanced symmetrical waveform? instead of calculating the biasing values?