1. akithmari

    Need a review to my class AB Amplifier design

    I've been working on this amplifier for about 4 days. Here's the circuit so far. The amplifier working good until the Vpeak input reach 0.6 Vp. the signal get distorted. i don't know how to improve my amplifier. Here's my calculation : First stage (Common Emitter) Zi = 2.1k ohm Zo = 6k ohm Ic...
  2. D

    High-frequency amplifier using bipolar transistors

    Could someone please help design a cascode amplifier with these parameters? Frequency range: 200 kHz to 20 MHz Input signal voltage: 10 mV to 1 V Power supply voltage: 5 V to 12 V Power consumption: up to 100 W And if possible, please also include the calculations showing how to achieve this...
  3. C

    SSB amplifier 25w not working as should

    I'm trying to fix SSB 25W amplifier, it's worked and I overrated Amplifier with voltage, and step modulator voltage regulator get burned, which is inside with amplifier in Al box. New voltage regulator...
  4. A

    ripple at voltage supply for pre amplifier

    Suddenly an amplfier shows terrible noise on the digital input. The internal pre amplifier is supplied by the source below, which has about 1V ripple on its +/- 21 volts output. Could that be the cause? No idea what the output looked before the noise occured. But I assume supply voltage to a DAC...
  5. M

    Circuit break controlling two devices at the same time, with same button

    Hi! I would like some tips regarding how to control power to two of my devices with help from just one circuit break. One of the devices are a power bank which have one red and one black cable from it (so that shouldn't be so hard) and the other device are an amplifier which gets it's power...
Top