Friends interested The cheap digital voltmeter using CA3162 and CA3161 very much. But cannot buy ICs since it is very ancient. Now there is digital voltmeter panel meter that easy to use as Figure 1 is 0-50V scale. Display with LED 7 segment. In cost 3$ dollar only. Figure 2 is wires connector or terminal by white is power supply of 9volts DC or AC and Input wires is a black as negative(-) and the next one a Red wire as positive (+). on 0-50V range full scale. So fixed to most my working. Therefore is need to use power …
Tag: 9V Power Supplies
More about 9 volts DC power supply or 9V voltage regulator
I collect these transformerless power supply circuit, like to use a capacitor instead, it smaller and lighter than a transformer, will useful as follows
Modify power supply source in old circuit PCB. I then build to is 9v regulated power supply circuit , that can give current 1 to 2Amp. Look 3 circuit below
This circuit designs for modify power supply input 12V from battery or the other. Have the level voltage be down be left 9V be stable or , 9V at 2 Amp DC power supply . By this circuit gives usual equipment , seek easy. Be integrated circuit IC 741 and power transistor 2N3055. Besides this circuit still can fine to differ out voltage with well and have picture stability although load modify. The zener diode 8.2V be formed fix stable reference or voltage the referable at pin3 of the integrated circuit and the VR1 for give fine the level volt …
This is the Power Switching Regulator 9V Circuit that is low current power output and It has strong point is the voltage input change from 2.4V to 10V but a constant voltage output 9 Volt. We used the RC4193 Micropower Switching Regulator is the base, easy to use and there are a few parts in circuit. The test battery point for check voltage of batter or input. The low power switching regulator IC, number: RC4193, that that Contained in a small body of caterpillar 8-pin. It is designed for devices that work with batteries. The DC regulator power supply is …