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enter image description here Voltage in R1 is kept at 64 mV/298K. (From datasheet)

Thus, at room temperature (~298 K), you'll get 64 mV at R1:

I = 64 mV / 33 Ohm = ~ 2 mA

So you should see 2mA drawn from your battery.

As a side note, using a bad multimeter in ampermeter mode is not a good idea. You have way too high series resistance. Instead of that, just measure the voltage on R1 and see if it's actually ~64mV.

If you really really need to use the multimeter in ampermeter mode, - Take multimeter in ampermeter mode - red wire to Vbat "+" terminal - Black wire to "V+" of LM 334Z - of course delete the current wiring between the to shown in the picture

edit: As pointed out in comments, the multimeter is in voltmeter mode (shown in picture).

enter image description here Voltage in R1 is kept at 64 mV/298K. (From datasheet)

Thus, at room temperature (~298 K), you'll get 64 mV at R1:

I = 64 mV / 33 Ohm = ~ 2 mA

So you should see 2mA drawn from your battery.

As a side note, using a bad multimeter in ampermeter mode is not a good idea. You have way too high series resistance. Instead of that, just measure the voltage on R1 and see if it's actually ~64mV.

enter image description here Voltage in R1 is kept at 64 mV/298K. (From datasheet)

Thus, at room temperature (~298 K), you'll get 64 mV at R1:

I = 64 mV / 33 Ohm = ~ 2 mA

So you should see 2mA drawn from your battery.

As a side note, using a bad multimeter in ampermeter mode is not a good idea. You have way too high series resistance. Instead of that, just measure the voltage on R1 and see if it's actually ~64mV.

If you really really need to use the multimeter in ampermeter mode, - Take multimeter in ampermeter mode - red wire to Vbat "+" terminal - Black wire to "V+" of LM 334Z - of course delete the current wiring between the to shown in the picture

edit: As pointed out in comments, the multimeter is in voltmeter mode (shown in picture).

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enter image description here Voltage in R1 is kept at 64 mV/298K. (From datasheet)

Thus, at room temperature (~298 K), you'll get 64 mV at R1:

I = 64 mV / 33 Ohm = ~ 2 mA

So you should see 2mA drawn from your battery.

As a side note, using a bad multimeter in ampermeter mode is not a good idea. You have way too high series resistance. Instead of that, just measure the voltage on R1 and see if it's actually ~64mV.