3lectrix
New Member
I'm trying to build a circuit which I am doing on a breadboard and using a 9v battery to power it.
![police-lights.gif police-lights.gif](https://www.electro-tech-online.com/data/attachments/46/46757-061e692ddf568fabedf93da6f7109e4e.jpg)
When the circuit is built and I plug in the battery the two LEDs on the right hand site light up and stay lit.
Could there be a problem with the transistor not getting enough voltage from the base?
The simulation runs without any problems.
![police-lights.gif police-lights.gif](https://www.electro-tech-online.com/data/attachments/46/46757-061e692ddf568fabedf93da6f7109e4e.jpg)
When the circuit is built and I plug in the battery the two LEDs on the right hand site light up and stay lit.
Could there be a problem with the transistor not getting enough voltage from the base?
The simulation runs without any problems.