Comments on: Fridge Door Alarm Circuit https://electronicsarea.com/refrigerator-door-alarm-circuit-two-555-timers/ Electrical and Electronics Tutorials and Circuits Fri, 29 Dec 2023 18:22:51 +0000 hourly 1 https://wordpress.org/?v=4.9.25 By: Marcel https://electronicsarea.com/refrigerator-door-alarm-circuit-two-555-timers/#comment-2415 Mon, 30 May 2016 19:09:13 +0000 http://electronicsarea.com/?p=1299#comment-2415 Hello Vladimir

Thank you for showing us the error in the diagram. The 9 volts battery is connected as follows:

– The positive battery terminal is connected to the top of the R1 resistor
– The negative battery terminal is connected to ground

regards

]]> By: Vladimir https://electronicsarea.com/refrigerator-door-alarm-circuit-two-555-timers/#comment-2277 Thu, 19 May 2016 19:36:42 +0000 http://electronicsarea.com/?p=1299#comment-2277 There is no battery on this diagram.

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