12V to 9V 2A step down dc converter using IC 741 and 2N3055

Thursday, November 6th, 2008
                        Advertisements


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 [...]

Micropower Voltage Reference with LM4250

Sunday, September 28th, 2008
                        Advertisements


A low-drift voltage reference can be easily made by converting a zero temperature coefficient current to a voltage. JFETs biased slightly below pinch-off exhibit a zero temperature coefficient drain current (ID) as shown in Figure 1. With the above property and a micropower operational amplifier, used to convert the drain current to a voltage, a [...]

Dual DC Regulator 15V using C1061 and A761

Wednesday, September 17th, 2008
                        Advertisements


A friend of me you one take an interest a side Sound Audio the very. He takes an interest to want to build Pre tone Control which use the integrated circuit OP-AMP. By these circuit often use power supply Model Dual DC Regulator which have [...]