delabs Technologies News » Circuits

Interface ICL7135 Voltmeter to Atmel 89C52

delabs — Sun, 02 Aug 2009 14:31:00 +0000

This circuit is an interface between 89C52 of Atmel with 7135 of Intersil. With This circuit you can read analog data of both polarities you can change the range scale with extra circuits, you can store data on a EEPROM or send them to PC thru RS232 or Comm port.

TechLib – Electronic Experimenter Records

delabs — Wed, 24 Jun 2009 13:10:00 +0000

TechLib – Electronic Experimenter Records

A technical library for the hobbyist and experimenter. – Charles Wenzel

World’s Smallest Geiger Counter Karen’s Mic. Input Telemetry Device Temperature Controlled Ovens Two-Transistor Atomic Frequency Standard Super-Sensitive Ionization Chamber Cockcroft-Walton Diode Voltage Multipliers

delabs Schematics on Wordpress and Laughing Squid

delabs — Tue, 31 Mar 2009 12:25:00 +0000

delabs Schematics now on a WordPress, you can comment on the circuits if you need more details. I will try to clarify your doubt or suggest extra reading.

Electronics Circuits is now Hosted on Laughing Squid.

It is a Copper Squid, That makes it more Electrifying !

SWTPC Computer Documentation Repository

delabs — Tue, 21 Oct 2008 03:20:00 +0000

SWTPC Computer Documentation Repository

This site’s purpose is to address the lack of technical information for some of the rarer vintage computers and related peripherals, with a strong focus on SWTPC. More than 600 pages of assembly instructions, schematics, program listings, catalogs, photos and much, much more!

Bill’s Knowledge Base Michael Holley’s massive SWTPC doc collection. Popular Electronics Radio-Electronics Hands-on [...]

Circuits using only discrete devices

delabs — Sat, 18 Oct 2008 03:35:00 +0000

Here are circuits made of Resistors, Capacitors and Inductors which are passive components. Crystals, Thermistors, Varistors, Variable Passive RLC are also Passive Parts. Zeners, Diodes, NPN-PNP Transistors, FET, MOSFET, SCR, Triacs are all discrete active devices.

Circuits using only discrete devices

Isolated dual power supply from 5V Telephone LED status indicator Music Sound to light converter Simple Water operated relay LED [...]

Power Electronics and Mains Power

delabs — Sat, 18 Oct 2008 01:36:00 +0000

I have updated some pages, and integrated new pages with some explanations. These are related to mains power and power electronics. – ananth Tables related to Power Electronics

High Resistance Insulation Materials Mains Voltage Power Transformers Ohms Law – Amps Volts Watts Relation

Mains Voltage and Power Circuits

Stabilizer Step up 230V AC 500VA Solid-State Stabilizer Step up 110V AC Mains Voltage [...]

Measureall Workbench Test Instrument

delabs — Sun, 28 Sep 2008 03:34:00 +0000

This was a Student Project of mine, it is a very basic instruments that could do most of the tasks on a test bench.

The cabinet used, was available as a part of a Hi-Fi DIY System, The Range and Mode switches were Modular Stackable Interlocked MultiPole Switches. The rest of the Interface were wirewound pots, [...]