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  • 60 Hz Timebase with MM5369

    <cut> This is an example to generate 60 Hz timebase from crystal 3.579545MHz for multipurpose such as clock,timer,function generator In data sheet determine C1 = 30 pF and C2 = 6.36pF </cut> VN:F [1.6.9_936]please wait…Rating: 6.0/10 (1 vote cast)VN:F [1.6.9_936]Rating: -1 (from 1 vote)

  • Off line Telephone tester

    Here is a circuit of an off-line telephone tester which does not require any telephone line for testing a telephone instrument. VN:F [1.6.9_936]please wait…Rating: 5.0/10 (2 votes cast)VN:F [1.6.9_936]Rating: 0 (from 2 votes)

  • High Resistance Voltmeter

    The full-scale deflection of the universal high-input-resistance voltmeter circuit shown in the figure depends on the function switch position as follows: VN:F [1.6.9_936]please wait…Rating: 7.0/10 (1 vote cast)VN:F [1.6.9_936]Rating: 0 (from 0 votes)

  • Contactless Mains Voltage Indicator

    This is a CMOS IC (CD4033) based circuit which can be used to detect presence of mains AC voltage without any electrical contact with the conductor carrying AC current/voltage. VN:F [1.6.9_936]please wait…Rating: 6.5/10 (4 votes cast)VN:F [1.6.9_936]Rating: 0 (from 0 votes)

  • Zener Diode Tester

    Here is a handy zener diode tester which tests zener diodes with breakdown voltages extending up to 120 volts. VN:F [1.6.9_936]please wait…Rating: 4.5/10 (4 votes cast)VN:F [1.6.9_936]Rating: +1 (from 1 vote)