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  • Mini organ NE555

    This is a mini organ circuit. The 555 timer circuit will generate tone like organ when presss S1 to S5. VR1 use to adjust frequency interval. VN:F [1.6.9_936]please wait…Rating: 4.8/10 (302 votes cast)VN:F [1.6.9_936]Rating: -12 (from 128 votes)

  • Power pulse circuit by LM350 and NE555

    This circuit can use to drive lamp,power LED,DC motor etc. Adjust R5 for output amplitude.Adjust R1 for output power .The LM350 is adjustable 3-terminal positive voltage regulators is capable of supplying in excess of 3A over a 1.2V to 33V output range.This circuit requires 5-15V power supply. VN:F [1.6.9_936]please wait…Rating: 5.2/10 (41 votes cast)VN:F [1.6.9_936]Rating: […]

  • 12V to 3V convertor

    This is an simple and cheap circuit to convert voltage from 12V to 3V.In fact this is a basic regulator circuit.<cut>The output voltage determined by Vout = Vzener – Vbe When Vzener is zener voltage output. Vbe is saturate voltage when transistor on (about 0.6V) Fig 1. 12V to 3V convertor </cut> VN:F [1.6.9_936]please wait…Rating: […]

  • RS232 transceiver circuits

    There are several RS232 transceiver circuit used for commond communicated between microcontroller and other devices such as PCs or devices rs232.Here is a collection of RS232 transceiver circuits that use well-known for today. 2 transistor The circit using 2-transistor and some components RS232 transceiver.It useful for the lowest application dose not provide a long duration. […]

  • Solar power supply

    This circuit delivers either 4.8 or 7.2 V regulated at 15 mA with a 3-V input from a bank of photocells. Rl should be 453 kQ for a 7.2-V output and 274 Ø for a 4.8-Vdc output. Regulator efficiency is around 70%. This should be considered when selecting suitable solar cells. VN:F [1.6.9_936]please wait…Rating: 0.0/10 […]

  • Remote Solar LED light

    VN:F [1.6.9_936]please wait…Rating: 0.0/10 (0 votes cast)VN:F [1.6.9_936]Rating: 0 (from 0 votes)

  • Solar Charged LED Utility Light

    VN:F [1.6.9_936]please wait…Rating: 0.0/10 (0 votes cast)VN:F [1.6.9_936]Rating: 0 (from 0 votes)

  • High Efficiency 12V White LED Driver

    Power this project from sunlight with a CirKits solar power circuit board kit. VN:F [1.6.9_936]please wait…Rating: 0.0/10 (0 votes cast)VN:F [1.6.9_936]Rating: 0 (from 0 votes)

  • Solar Powered Reading Lamp

    VN:F [1.6.9_936]please wait…Rating: 0.0/10 (0 votes cast)VN:F [1.6.9_936]Rating: 0 (from 0 votes)

  • Self Powered Solar Box Furnace

    (C) G. Forrest Cook 2002 VN:F [1.6.9_936]please wait…Rating: 0.0/10 (0 votes cast)VN:F [1.6.9_936]Rating: 0 (from 0 votes)