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Each one of the devices must counter the amateur electronics store , an adjustable voltage direct current power source. I gave the circuit diagram below 1 volt and 40 -volt power supply, the output can be adjusted arasınada as miliamperle 5 amp maximum current is adjustable from 50 . 1-40 V, 50 mA - 5A Regulated Power Supply Circuit Diagram  In this way could be used for voltage source can also be used as a constant current source . Adjustable current limiting , since it is clear that the short-circuit protected . In this phase, on my testing of other circuits , and calibrations can be used successfully in conjunction with a digital voltmeter . Circuit held four transistors . Network isolation transformer , 220V primary and secondary of the power of 35 to 40 volts and 100 VA transformer should be . KBPC601 as a diode bridge ( 6A - 100V ) is sufficient. 4 6- amps instead of the bridge diode aperajlı or higher can also be used . Half- bridge diode and 2N3005 power transitörü do KBPC6...

This is a best Frequency/Voltage Converter circuit diagram proportional voltage by the use of a frequency-to-voltage (F/V) converter . Teledyne Semiconductor`s Type TSC9402 is a versatile IC. Not only can it convert voltage into frequency, but also frequency into voltage. It is thus eminently suitable for use in an add-on unit for measuring frequencies with a multimeter.   Best F and V Converter Circuit Diagram Only a few additional components are required for this.. Just one calibration point sets the center of the measuring range (or of that part of the range that is used most frequently). The frequency-proportional direct voltage at the output (pin 12—amp out) contains interference pulses at levels up to 0.7 V. If these have an adverse effect on the multimeter, they can be suppressed with the aid of a simple RC network.  The output voltage, U0, is calculated by: tfo=C/rei(Ci + 12 pF) R2fm Because the internal capacitance often has a greater value than the 12 pF tak...

Monitoring of an inverter during operation has being the major challenge faced by local inverter Manufacture which has lead to low demand for locally built Inverters due to sudden break down or Battery being overcharged. most of the Inverter schematic claimed or used by Local Inverter Manufacture downloaded from the internet are for tutorial purpose not not for commercial there are tendencies for failure therefore it is time for us to start developing things of our own... proudly NIGERIA...... The featuring M.C.U is the Microchip PIC16F876A FEATURES OF THE ABOVE SCHEMATIC ARE STATED BELOW : INVERTER PROTECTION : LOW-BATTERY SHUTDOWN                                              : OVER LOAD SHUTDOWN INPUT                                              : O/P SHORT CCT SHUT-DOWN INPUT                                              : HIGH TEMPERATURE SHUT-DOWN INPUT                                              : LOW-BATTERY : BEEP START AT 11 V                                              :INVE...