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Small and powerful enough battery?

  1. May 3, 2017 #1
    Hi all,
    I work on something.. its alarm tag. I found buzzer which i want to use in simple electric circuit. Components are the buzzer, and a battery. The tag must work minimum 5 min. The problem is.. I can not find battery small and powerful enough at the same time. Battery diagonal must be 3 cm or less.
    Electronic characteristics- Magnetic Buzzer PB-0927PQ

    -Oscillation Frequency (Hz)-_______________2731
    -Operating Voltage (Vp-p)-_________________4.5~ 5.5
    -Rated Voltage (Vp-p)-_____________________5.0
    -Current Consumption (mA/max.)-____________75 at Rated Voltage
    -Sound Pressure Level (db/min)-______________85 at 10cm at Rated Voltage
    -Coil Resistance (Ω)- _______________________25± 4
    -Operating Temperature (°C)________________-20 / +70
    -Storage Temperature (°C)_________________-30/ +80
    -Condition by wave (°C)__________________260 ±5°C / within 5 sec
    -condition by hand (°C)_________________350±20°C / within 5 sec

    I hope someone knows the answer of my problems (battery, brand or i dont know..)
    please help me.
     
    Last edited by a moderator: May 3, 2017
  2. jcsd
  3. May 3, 2017 #2

    russ_watters

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    Staff: Mentor

    I might be missing something, but you appear to be saying you need 75 ma for 5 min at 5V? That's only 6.3 mah. Slap 2 CR2032 lithium batteries together and you get 230 mah at 6V in a package only 20x7mm!
     
  4. May 4, 2017 #3
    Thank you for your reply.
    Do you think Renata 317 Skin 5.80x1.65mm /1.55V package of four can do the same work.
     
  5. May 4, 2017 #4

    russ_watters

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    Staff: Mentor

    No; Google tells me they are only 10.5 mah.
     
  6. May 4, 2017 #5
    How about adding small transistor. It might help right?
     
  7. May 4, 2017 #6

    PhysicoRaj

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    Gold Member

    No, transistors do not increase the capacity of a battery.
     
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