Circuit Breaker - Implementation on a breadboard

Thread Starter

lorenzoalari

Joined Jun 30, 2017
8
Hi guys,
I am trying to implement ona breadboard an electric circuit, as the one in the figure. The first capacitor on the left is not important. I tried to create it on a breadboard (it was my first time) but for some reason it is not working. I try to attach some image to explain how I hook everything up. Could you please make me notice where my mistake is? The input comes from a piezoelectric element, and the breaker should open the circuit and let the current flow through the inductor. It seems fine to me, but if i measure the voltage on the load, I have no output.

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AnalogKid

Joined Aug 1, 2013
12,130
Please explain how you think the circuit should function, calling out the components by their reference designators.

What is Ip? It looks like it is connected directly between the + supply rail and GND, with an input but no output.

Gold star for including reference designators in your schematic.

ak
 

Thread Starter

lorenzoalari

Joined Jun 30, 2017
8
Ip and Cp in the schematic represents a piezoelectric element, which are directly put in the + and - supply. The input is an alternate voltage, and the overall resistor-diode-capacitor should work as a minima/maxima identification: the voltage on the piezo goes in the base of the transistor, and the voltage of the capacitor to its emitter. When the difference is high enough to close the transistor (working as a switch), the current flows through an inductor, which inverts the voltage on the piezo. It is an implementetion of a Synchronized Switch.

I connected all the elements in the top of the figure to the positive rail (one wire of the piezo) and the capacitors and inductors (the one grounded in the schematic) to the negative rail.

It is my first time using a breadboard, so I am not sure whether I make stupid mistakes.
 

AnalogKid

Joined Aug 1, 2013
12,130
It still is not clear. What is the circuit supposed to do? Is it supposed to be an electronic circuit breaker like the title says? If so, which wires are the power input and which wires are the poser output, and which component is sensing the current?

If it is not an electronic circuit breaker, then what is it? It looks like you want to switch current into an inductor. Why? Is the inductor a part of some other device?

ak
 
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