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I have 2 DC sources 12V and 5V, I want to switch them using one switch as shown on scheme. I used here 2 diodes to isolate circuits and it works fine on simulation, but in real scheme 5V (actually rather 4.7V from USB) becomes 5.4V. How can I make circuits run independent (ie. they do not affect each other) in this case?

enter image description here

Simulation with open/closed switch - works fine on simulation but not in reality

enter image description here

I have 2 DC sources 12V and 5V, I want to switch them using one switch as shown on scheme. I used here 2 diodes to isolate circuits and it works fine on simulation, but in real scheme 5V (actually rather 4.7V from USB) becomes 5.4V. How can I make circuits run independent in this case?

enter image description here

Simulation with open/closed switch - works fine on simulation but not in reality

enter image description here

I have 2 DC sources 12V and 5V, I want to switch them using one switch as shown on scheme. I used here 2 diodes to isolate circuits and it works fine on simulation, but in real scheme 5V (actually rather 4.7V from USB) becomes 5.4V. How can I make circuits run independent (ie. they do not affect each other) in this case?

enter image description here

Simulation with open/closed switch - works fine on simulation but not in reality

enter image description here

added 171 characters in body
Source Link

I have 2 DC sources 12V and 5V, I want to switch them using one switch as shown on scheme. I used here 2 diodes to isolate circuits and it works fine on simulation, but in real scheme 5V (actually rather 4.7V from USB) becomes 5.4V. How can I make circuits run independent in this case?

enter image description here

Simulation with open/closed switch - works fine on simulation but not in reality

enter image description here

I have 2 DC sources 12V and 5V, I want to switch them using one switch as shown on scheme. I used here 2 diodes to isolate circuits and it works fine on simulation, but in real scheme 5V (actually rather 4.7V from USB) becomes 5.4V. How can I make circuits run independent in this case?

enter image description here

I have 2 DC sources 12V and 5V, I want to switch them using one switch as shown on scheme. I used here 2 diodes to isolate circuits and it works fine on simulation, but in real scheme 5V (actually rather 4.7V from USB) becomes 5.4V. How can I make circuits run independent in this case?

enter image description here

Simulation with open/closed switch - works fine on simulation but not in reality

enter image description here

Source Link

Build two independent circuits with one switch

I have 2 DC sources 12V and 5V, I want to switch them using one switch as shown on scheme. I used here 2 diodes to isolate circuits and it works fine on simulation, but in real scheme 5V (actually rather 4.7V from USB) becomes 5.4V. How can I make circuits run independent in this case?

enter image description here