Electronic Circuits - Schematic Diagrams

Electronic Circuits - Schematic Diagrams

Analog, Digital, Electrical and Power Electronic Designs

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Discrete-Circuits

Ohmmeter – Simple Resistance Measurement

October 22, 2020 delabs 0

Measurement of resistor values in circuit configurations are required to be made often, as these might have changed in value due to various tolerance ranges, […]

Flashing Mains Neon Lamp

August 25, 2020 delabs 0

Here is a Neon Flasher circuit (untested) for a user request at Circuits FAQ. This can be built into a switchboard or a gadget for […]

Voltage Doubler with Diodes

March 25, 2020 delabs 0

This is a Simple Voltage Doubler to boost 3V battery voltage to power some low-power 5V circuits. In needs a Clock input with high fan-out. […]

Simple Water operated relay

February 25, 2020 delabs 0

This was done in my early days, i have upgraded it, it ought to work, reduce the number of transistors to make it less sensitive, […]

FET Current Source and MOSFET

January 12, 2020 delabs 0

This is a constant current source using a FET. This is the most simple replacement to series resistor to limit current. The N-Channel FET BF256C […]

Voltage Doublers and Multipliers

December 17, 2018 delabs 0

Voltage multipliers are used to obtain low current high voltage, from an existing AC Source. Step up transformers can be used, but the insulation problems […]

Constant Current Source LED Drive

October 30, 2018 delabs 0

This is a Constant Current Source LED Driver, When the LED driver Upper-NPN is driven by a voltage thru 4.7K the LED lights up. Assume […]

Telephone status indicator with LED

September 28, 2018 delabs 0

This will monitor telephone status without loading the telephone line, this way if you have two phones in parallel you will know if one of […]

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