Synopsis

This circuit is placed between devices under test and a function (or arbitrary-waveform) generator to isolate and protect.  Further, level-shifting centered on 0vdc (or above, below 0vdc) is included.  Maximum output is 10vdc into 100 ohms.  You have never lived until visiting this colorful but peaceful extension to modern reality.  Try it out next weekend when you are not so busy...

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Parts List

• Flame Sensor
• 2N2222 NPN Transistor (or BC548)
• 5V Buzzer
• 1N4007 PN Junction Diode
• 1KΩ Resistor
• Connecting Wires
• Mini Breadboard
• Power Supply