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Circuit diagram DTMF Decoder using HT9032A MT88L70 HT9202H

Circuit diagram DTMF Decoder using HT9032A MT88L70 HT9202H This exciting project and something that many have been developed, but always remains to add some improvements. The DTMF decoder circuit for distinguishing some separate external components to produce devices capable of sending binary code from a button on the multi-tone phone. This circuit, in addition to […]

Simple USB Microcontrollers Circuit

Microcontrollers USB Circuit Using PIC16C745 8-Bit cmos, Microcontrollers USB Using PIC16C745 Power-up Timer (PWRT) and Oscillator Start-up Timer (OST). Watchdog Timer (WDT) with its own on-chip RC oscillator for reliable operation. Brown-out detection circuitry for Brown-out Reset (BOR). Programmable code-protection.  Power saving SLEEP mode. Selectable oscillator options – EC – External clock (24 MHz) – […]

Class B audio amplifier – 2500W

Class B audio amplifier – 2500W using R 220 R 47k R 2k2 R 4k7 R 8k2 Tr C945, Tip 41, Tip 42, 2SC2922, 2SA1216 Audio amplifier – 2500W Layout – 2500W     schematic diagram

25W Audio Amplifier Circuit very simple

25W Audio Amplifier Circuit, Using IC TL081 and Tr TIP125, TIP120

STK4141 stereo power amplifier

STK4141 stereo power amplifier circuit based on single IC 2 x 30W Stereo Power Amplifier with STK4141

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