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Zener diode regulated transistor circuit with NPN Darlington transistor. | Circuit, Electronics circuit, Diy electronics
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50x1N4744A ZENER DIODE 15V 1W DO-41 Glass Pinball Machine Power Supply: Amazon.com: Industrial & Scientific
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Small Zener diode voltage regulator circuit with PCB - ElecCircuit.com | Power supply circuit, Voltage regulator, Power supply
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