Schematic & Wiring Diagram

80W power amplifier circuit diagram based MJL4281A / MJL4302A and MJE15034 / MJE15035 power transistor. Actually the output power range is about 60W to 80W. This is an incredibly excellent amplifier. It's easy to construct, applies generally offered parts and is stable and well-performing. The diagram featured is really a full update on the original project, and even though it has a lot of similarities, is definitely a different design.



This amplifier circuit, even though extremely simple, is capable of great performance. This is not an amp to be under estimated, as the sonics are pretty good indeed, and this really is due (in part, at least) to the inherent simplicity of the diagram design. The amplifier is exceptionally quiet, and is reasonably tolerant of hard loads. It's an perfect amplifier for biamped systems, and may possibly be operated in bridge mode (BTL) in case you apply the suggested output transistors (which have the required power ratings).

Go to this 60-80W power amplifier page to get the detailed information about the circuit.

The following diagram is the circuit of CMoy headphone amplifier. Chu Moy designed a very popular headphone amplifier that’s easy to build, and it can be built small enough to fit in a pocket, power supply and all. It’s powerful enough to drive very inefficient headphones to thunderous volumes from even weak sources

CMoy headphone amplifier circuit diagram:


The op-amp used for this circuit is OPA2132PA, you may use OPA2132P or OPA2134PA as the alternative op-amp chip.



Power supply circuit for CMoy headphone amplifier:


Go to this page for the complete tutorial of CMoy headphone amplifier circuit.

Have you ever wondered how many various colours can illuminate a LED? One, two or possibly three? Making this simple circuit, you will discover it a lot more. The important component in this design is a dual LED. One such accessory includes two inside the 'slices' of different diode LED, that each and every of them produces a different color (commonly green and red). For the drive needs three pins, a common cathode and two separate roots. In this way every single of the two integrated diodes can light up as independent of one another. You'll find only two colors that may create this dual LED.



Setting appropriate percentage of the currents flowing via two separate channels of the POY is, we have other from pure green and red, orange (IR = 21G) and yellow (IG = 2IR). In this circuit, the anodes of the double LED driven by the outputs a six-point buffer tri-state technology CMOS. As opposed to most integrated family of CMOS 4000, the 4503 applied here, can supply many different loads on high currents of the order of 10 mA. The stream that goes towards the two diodes is limited by the resistors R1 to R6 whose specific values are those that attain the distinct colors and changing brightness them. The circuit was originally created to display three various situations, each expressed their the presence of logical '1 'in one of the inputs a, b, c. The entries are able to activate only one of every single time, and if none of them had been excited, a NAND gate (IC1c) ensured that the LED 'to create fourth color. In the improved version we present these days, the circuit has added another level oscillator (IC 1 a and IC1b), which produces about two pulses per second. The pulses are introduced in the entrance activation OA (pin 1) of 4503, resulting in colorful flashes. The oscillator is controlled by the of logical statements applied to the inputs 'd' and 'e'. If both are simultaneously logical '1 ', then each the oscillator and also the buffers of 4503 stay inoperative. If e = 1 and d = 1, then all buffers are driven in a state of high resistance plus the circuit absorbs the least feasible electric current (standby). The power supply circuit was initially set at 12 Volt, but all of the components that are able to work equally properly with any voltage in between 5 Volt and 16 Volt.