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Blueprints 1 By Ko Tilman
Paperback: $4.26
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Electronic schematics published on the former channel of radioam232 on You Tube (2008 - may 2010).
small scale solar energy systems (revised, april 2013), E-book By Ko Tilman
eBook (PDF): $2.70
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The book describes a stand alone solar energy system, made with a 24 Volt wet (open) lead acid battery and two solar panels from 200 Watt. A schematic from a simple power battery charger with... More > transistors (2N3055) is published. It descibes how to get power inverters (24 V DC to 230 V AC, max 1500 Watt) into service with a simple soft start device. Schematics from switchboxes (switch between the AC grid and the AC inverter) are given. The approach is LOW TECH. More info can be found in the preview. IMPORTANT: on page 44 you find a trickle charger schematic. I found that the trickle charge values are too low for the Dutch solar situation given a permanent pull out of energy from the lead acid battery. Better values: 80 AH= 500 mA, 40 AH=250 mA, 20AH=125 mA, 10 AH=50 mA (these values given a for a constant use of energy from the battery). On page 79 pin 2 sets V ref, experiment with the 6K8 and 1K resistor (make them higher) for a better switch off moment.< Less
small scale solar energy systems (revised, april 2013) paperback By Ko Tilman
Paperback: $9.66
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The content from this book is identical to the content from the E-book, except the pages regarding the usable trickle current. Please see the page where the E-book is published on the Lulu website.... More > Much more information can be found in the preview on the Lulu website.IMPORTANT: the trickle charge currents proved (after more experiments) to be too low for the Dutch solar situation (especially during the autumn and winter). The low trickle charge current exhausted the battery too much. Better values: 80 Ah=500 mA, 40 Ah=250 mA 10 Ah=50 mA. These values protect your wet lead acid battery better during the dark seasons. On page 78-79 pin 2 from the 741 Opamp sets the reference voltage. Experiment with the 6K8 and the 1 K resistor (make them higher) for a better switch-off moment.< Less
Schematics 1 (revised) eBook By Ko Tilman
eBook (ePub): $4.77
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This is the e-Book version from "Schematics 1" (revised, december 2011). The first issue from this book was in 2008. A beginners book in analog Electronics, ment for my You Tube viewers and... More > everyone interested in electronics. Informative and useful to make a first start in electronics. With many schematics and illustrations. A detailed description about the content can be found on the Lulu website (preview). Text: English.< Less
two transistor sine wave oscillator 20 Hz - 19,2 KHz By Ko Tilman
eBook (PDF): $1.32
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Schematic, layout and pictures from a two transistor (Wien bridge) sine wave oscillator (prototype) that works between 20 Hertz (15 Hertz) and 19,2 KHz. Easy to make, a real beginners project.... More > Including a schematic from the power supply and two schematics from 1 transistor amplifiers/buffers to which the generator can be connected. The circuit works on 12 Volt.< Less
Schematics 3 - electronic switches, generators and cathode ray tube circuits By Ko Tilman
Paperback: $7.43
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The third book in the series (electronic) "Schematics". The focus is on the 741 Opamp, comparator circuits, electronic switches sensitive (e.g.) for light or temperature, squarewave... More > generators, the 555 (timer) chip, the Schmitt trigger, High Voltage generators, an elementary oscilloscope circuit, analog timers, relay circuits, The book is written in English. (107 pages, 25 pictures, 65 schematics)< Less
3-7 Watt audio amplifier (TDA 1519 A or 2N3055 transistors) with tone control By Ko Tilman
eBook (PDF): $1.31
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This document (20 pages, PDF file) describes a stereo amplifier, made with the TDA 1519 A Chip or with 2N3055 transistors (conventional amplifier with an output capacitor). Also the schematics from... More > two tone control units (a presence/loudness filter and a parallel T filter) are published. With these filters you can create the type of sound that you like in your audio system. The document refers to a series of video's on my Youtube channel (called: "developing a 6 (4) Watt stereo amplifier"), the circuit in this video is published here. The tone control/parallel T filter only works with 1 switch, so there is no separate control potentiometer for "low" and "high" frequencies. The amplifiers need a good quality loudspeaker box (with some bass boost) to show their good properties. The document does not supply a schematic for a power supply with which the amplifier can be connected to the grid (110-230 V - 50/60 Hz).< Less
Schematics 2 Audio amplifiers and loudspeaker boxes By Ko Tilman
Paperback: $12.60
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A book (English language) about audio circuits: pre amplifiers, active and passive audio filters, a mixing circuit, power amplifiers, Chip amplifiers, loudspeaker boxes, cross over circuits. Much... More > attention is payed to good practice (and pitfalls) in home brewing audio amplifiers. Like proper ground wiring, shielding, earth faults, ground loops, hum, properties of a power supply, etc. Ment for people who want to make their own audio system from scratch and don't want to have problems in engineering. Approx. 44 schematics and 45 illustrations.< Less
Schematics 1 (revised) By Ko Tilman
Paperback: $8.05
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A beginners book in electronics, ment for my You Tube viewers and everyone interested in electronics. Informative and useful to make a first start in electronics. Also useful for more experienced... More > people. With many schematics and illustrations (the content is extensively described in the preview on the Lulu website).This book is a revised version from a book under the same title, issued in 2008.< Less
Schematics 2 Audio amplifiers and loudspeaker boxes By Ko Tilman
eBook (PDF): $5.72
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A book (English language) about audio circuits: pre amplifiers, active and passive audio filters, a mixing circuit, power amplifiers, Chip amplifiers, loudspeaker boxes, cross over circuits. Much... More > attention is payed to good practice (and pitfalls) in home brewing audio amplifiers. Like proper ground wiring, shielding, earth faults, ground loops, hum, properties of a power supply, etc. Ment for people who want to make their own audio system from scratch and don't want to have problems in engineering. Approx. 44 schematics and 45 illustrations.< Less