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Posts tagged TL071

Audio Tone Control – Layout and circuit diagram by yiroshi

Audio Tone Control – Layout and circuit diagram by  yiroshi using TL072

linear power supply circuit

linear power supply circuit using LM317, CD4541

LM319N Phone Circuit detector

LM319N Phone Circuit detector for Repair using LM319N, 4027B, BC548 LM319N Phone Circuit detector for Repair using LM319N, 4027B, BC548

The four channel PMT controller board

Controller Circuit Board The four channel PMT controller board is a PIC microcontroller based device that communicates with a PC by USB as an HID device and with a PIC-based “hand unit” via PIC-to-PIC RS-232 protocol. These two external inputs (USB and RS-232) send strings to the PMT controller that: * Sets the four high […]

Lead Acid Battery Charger circuit for 6V – 12V

Lead Acid Battery Charger circuit for 6V – 12V using NE555, LM7812, 2SA671, 1N4002, BC549

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