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LMZ Datasheet pdf – Micropower voltage reference diode – Motorola
Those references are not batteries. To achieve the desired result dataeheet resistance R1. Enric Blanco 4, 5 11 Post as a guest Name. Email Required, but never shown. Just think about it a while and calculate what the voltage at that junction is with D2 and D3 removed. I changed R2 and R3 to 47k and 22k and all works fine!
Lm385z Datasheet Marvelous Lm385z 1 2 Datasheet Pdf On Semiconductor
And it is so, if R2 and R3 are not present in the circuit. AltAir 2 Tony EE datasheett 62k 2 21 You must select a value well below this. daatasheet
Adjustable Micropower Voltage Reference
I’m doing a simple circuit using LM Sign up using Facebook. Em Ka, D2 and D3 ‘start working’ when the voltage is higher to 5V in.
If you don’t feed them with enough current and voltage they are just resistors. When the voltage is less than 5V they can be neglected. Sign up using Email and Password. As if they are not. Sign up or log in Sign up using Google.
This, of course, ignores your bias current through your LM The circuit operates as a resistive voltage divider.
LMZ Datasheet(PDF) – TI store
D2 and D3 cannot magically make 5 volts appear at the junction of R1 and R2 if the basic voltage at the point is less than 5 volt when D2 and D3 are not present. However when I measure it, OUT is only 2. Then the curtain will rise. You need to drop the 10K to a lower value, or use two batteries, but make sure you don’t exceed the maximum bias currents for your references.
You can’t do this with one 9V battery. Add that to your 5Volts, and you have Home Questions Tags Users Unanswered. Besides, from what I understand voltage across anode of D1 and cathode of D2 should be always 5V, right? However, at 4V voltage drop, the 10k resistor can only provide 0. The problem you’re encountering is that R1 is so high that it doesn’t let enough current flowing through to operate the diodes as datashest should.
The diodes need, according lk385z the datasheet, a minimum of 20 uA to operate. I don’t understand what you mean by resistive voltage divider – could you please explain?