Sunday, May 29, 2016

Power Amplifier OCL 500Watt RMS

Power Amplifier 500Watt RMS. 3 transistor bolted on the PCB board is not hot, just a single model. At the start of designing a pcb, three transistors is mounted under or bolted on the main pcb heatsink and the circuit is set closer to class A. Three-base diode base was willing to be used as a heat sensor, but it is hard mounted on a heatsink. Trails ground should not soldered on pcb, fire ground at the foot of two pot volume (stereo), is to avoid drone / hum.
Power Amplifier 500Watt RMS
This amplifier 500watt rms with a maximum power supply voltage at the load 45vct 2x speakers. PA3600w on par with other assemblies amplifier.
Use Power Amplifier 500Watt RMSInside and outside the room
Power supply Power Amplifier 500Watt RMSTransformer with a current strength of at least half of the nominal voltage, to compensate for a 4 ohm load 2x (4x speakers) such as stereo amplifiers professional standards, eg transformer 40Vct 20Amper. 40vct minimum supply voltage, if rectified would be more than 50vdc, transistor-power transistors will release energy (more life) if supply with 50Vdc voltage (40vct = vac).
Speaker using2x 500watt (12 ", 15") per mono block amplifier, speaker total 4 units to 1 stereo amplifier.It is advisable to use a 500W powered speakers (12 ", 15") as much as possible,is more effective in improving the gain of using a large speaker> 1.000Watt (18 ", 21") with the least amount.
Transistor Final Power Amplifier 500Watt RMSSuggested use Sanken series 3 sets.Too many final transistors without increasing the power supply transformer can weaken the thump of the bass and the sound is less stable, hoarse etc.
Carefully circuit Sanken many forgeries, for example Sanken 2SC2922-5DY (quality is unstable and does not correspond to the price). Transistor driver must also be original! If there is a problem such as a hoarse result, resistor 300 burning, etc. This may be because the component FALSE. C4793 (less character with standard transformer) can be replaced with original TIP31C (artificial transistor st hoping to give more than a spec written) on the condition that the supply voltage is not more than 45vct.
Resistors and capacitors do not really matter. The problem is electrolytic capacitors, Elco. Sorry average Elco Rubycon / marcon / Nichicon (original) is less suitable to be applied here, because he is more suitable work in the dc current, which is suitable for this is Elco brand nippon Chemicon (not all), and Elco another stable job at audio frequencies /air conditioning.
Almost all the native power amplifier assemblies only 500watt theoretically and practicallyon paper and table test, but in the power of music power is transferred to the speaker only a few dozen watts! Proof: cool heatsink / no heat, sound is loud. Adjust the power speakers with a power amplifier used!
Characters and features:Hifi full range with bass gain 2 ~ 4 times the usual amplifier. Effective for the production of such bas-class amplifier h & BTL.Speaker leaves more stable, not too advanced and not too far back even if exposed to shocks bass, speakers and power transistor expectations more durable.The values ​​of the components are set such that the power transformer is more efficient. Power transformer is not wasted, not turned into drone / wild signal / oscillation, etc.Sound can travel long distances in the field due to consider the Doppler effect.With the installation of the transformer model 2 below (test 2013), does not make the slightest hp signal when no sms / incoming call even though hp kept above the transformer, is one of the features, amplifier built-up not necessarily.

Layout component Power Amplifier 500Watt RMS

Layout component Power Amplifier 500Watt RMS

Audio Speaker Protector using 555

This Circuit of Audio Speaker Protector using IC 555 , Here I will present two pieces of layout scheme audio speakers protector , audio speakers protector serves as speaker protection , and power amplifier . Especially on the power amplifier protection system , in case of surge in the output of the power amplifier , the output power amplifier automatically be disconnected with the speakers . By using the relay as the breaker connection power amplifier with speakers . So that speaker power amplifier secure and safe.Below the layout scheme of Audio speaker protector.

Audio speaker protector 555

Using ic 555 as a basic circuit, and as a driver relay .

Speaker protection circuit

Power Amplifier APEX B250

Power Amplifier APEX B250, power amplifier circuit using transistor for based amplify audio. This power amplifier circuit using Transistor MJE350 , MJE340, MJE15032 , MJE15033 , 2SA1943 , 2SC5200. For the best quality audio output power amplifier , use the quality component's. This power amp can using power supply from 45V - 90V with current 10A. Buffer power amplifier using IC NE5532 for processing audio input signal and produced again with transistor driver and booster.

Design Power Amplifier
PCB Layout APEX B250
Component Placement Design
APEX B250 Power Amplifier

Monday, May 16, 2016

Digital Echo Circuit PT2399

Digital Echo Processor IC PT2399 is using CMOS technology in audio purposes. Digital Echo Processor PT2399 is implementing the system in the process of ADC and DAC audio repro echo.

Digital Echo Processor PT2399 has a high sampling frequency and 44K memory. Digital Echo Processor PT2399 to repro echo digital audio system of repro VCO delay time system that can be arranged. Digital Echo Processor PT2399 has a very low audio distortion of (THD <0.5%) and very low noise as well (No <-90dBV) so that the Digital Echo Processor PT2399 is capable of providing good audio quality.

Digital Echo Schematics
Digital Echo Circuit Schematic

Setting the external resistor from 10 K Ohm to 50 K Ohm. If the value is greater then the Delay Time also increases.
  • Echo Digital Application Processor PT2399
  • Video Tape Recorder
  • Video Compact Disk
  • Television
  • CD Player
  • Car Stereo
  • KARAOKE Mixer
  • Electronic Musical
  • Echo Audio Processor

Saturday, May 14, 2016

BTL OCL power amplifier input output

This circuit is convert BTL or OCL power amplifier input output signal signal, you can change BTL or OCL for your power amplifier, its useful for your power amplifier circuit. This OCL or BTL are basically on IC 4558 op-amp. This circuit include PCB design. To set up this circuit you can add before input output audio signal to amplifier input.

BTL OCL power amplifier input output

BTL OCL power amplifier input output pcb design