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 Super Steady Zener diode circuit

Monday, December 1st, 2014

This circuit is used for controls the voltage battery is steady, which the zener diode apply very low current about 1mA only, cause there is ripple voltage about 1 mV at voltage changing between 10 to 30 volts. As circuit the output is fixed to 8V. In circuit the reference voltage is connected to input […]


 Complementary common-emitter circuit

Monday, December 1st, 2014

This complementary common-emitter circuit has special feature that can be applied in 2 model. – Low distortion buffer – The low power output circuit How it works In Figure 1 quiescent current flow through T1 and T2 as voltage (U) and R1, R2 sequence. Look at the circuit will see that difference normal circuit at […]


 The CMOS current controlled oscillator circuits (CCO)

Sunday, November 30th, 2014

We can use a CMOS nand gate or inverter gate and two transistors into the current controlled oscillator circuit (CCO). In Figure 1 use two inverters are connected together as a astable multivibrator circuit. Figure 1 the normal astable multivibrator CCO circuit. If the output of N1 is “0”, and C1 will start be charged […]


 Non-inverting integrator circuit using op-amp

Saturday, November 29th, 2014

This is non-inverting integrator circuit that is improved that below. The obstacles of old integrator as Figure 1, is Connection of RC is at a virtual ground, cause C into the capacitive load across output of op-amp. It makes an impact on the Slew rate of the circuit. May solve this problem in a circuit […]


 Voltage to Frequency Converter Circuit

Friday, November 28th, 2014

This voltage to frequency converter circuit use the CA3130 OP-Amp ICs, that linearity Of changing is very well up to 0.5% and Temperature coefficient of less than 0.01% per degree Celsius. In Figure 1, IC1 act as the frequency generator is controlled by voltage. Suppose, first the output voltage of IC1 is + 15V. C1 […]



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