electronic circuit link

1. Simple Adjustable Voltage Source
2. Low Voltage, High Current Time Delay Circuit
3. LM317T Voltage Regulator with Pass Transistor
4. Interfacing 5 volt CMOS to 12 volt/ 25 Watt Loads
5. High Current Regulated Supply by LM317
6. High Current Power Regulator 12Volt 30Amp by 7812+2N3055
7. CMOS Toggle Flip Flop Using Push Button
8. 9 Second LED Timer and Relay Circuit
9. 9 Second Digital Readout Countdown Timer
10. 3 Transistor Audio Amp (50 milliwatt)
11. Thermistor
12. 2 Cell Lithium Ion Charger
13. Battery Check procedures
14. Salt Water Battery
15. Simple but reliable car battery tester
16. Nite Rider Lights
17. 12V to +-20V converter (for audio amplifier)
    

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Digital logic circuit

This is digital logic circuit. Which use digital IC kind CMOS and TTL many the number.
It be the character gate very the circuit has appropriately. It is the measuring instrument logic
show electricity position low or high get. May show with LED or utter hear all right.
The gate IC come to use produce sound frequency or the other circuit

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