Media Summary: Finding this orphan on Ebay, I decided that I had to save it. Watch along as we unbox and fire it up! This board is from an old B&F ... The 74 series of ICs is one of the longest running IC series. They encompass all basic Here I talk about the second bit of the Project, the Power Supply.

Transistor Logic Clock Mkii - Detailed Analysis & Overview

Finding this orphan on Ebay, I decided that I had to save it. Watch along as we unbox and fire it up! This board is from an old B&F ... The 74 series of ICs is one of the longest running IC series. They encompass all basic Here I talk about the second bit of the Project, the Power Supply. This is from a kit. Sometimes the hour counter does not reset above 13th count cycle, when the room becomes hot. This is a build of a bit by Kabtronics.com. It is a Update: here is an old scan of the schematic for this

Photo Gallery

Transistor logic clock MkII
Vintage 1972 TTL Logic Digital Nixie Clock B&F - saving and bringing back to life. -
Transistor Clock
The TTL Graveyard Clock
Transistor clock demonstration
Building a TTL-Clock/Timer Part 2:  Power Supply
Transistor clock progress #2
Transistor clock troubleshooting
Solder your own digital clock -  electronics kit by Science Hut
Transistor clock
Nixie Transistor Clock
MKIII Prototype
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Transistor logic clock MkII

Transistor logic clock MkII

This is the

Vintage 1972 TTL Logic Digital Nixie Clock B&F - saving and bringing back to life. -

Vintage 1972 TTL Logic Digital Nixie Clock B&F - saving and bringing back to life. -

Finding this orphan on Ebay, I decided that I had to save it. Watch along as we unbox and fire it up! This board is from an old B&F ...

Transistor Clock

Transistor Clock

Clock

The TTL Graveyard Clock

The TTL Graveyard Clock

The 74 series of ICs is one of the longest running IC series. They encompass all basic

Transistor clock demonstration

Transistor clock demonstration

Details here: http://ch00ftech.com/2012/07/18/

Building a TTL-Clock/Timer Part 2:  Power Supply

Building a TTL-Clock/Timer Part 2: Power Supply

Here I talk about the second bit of the Project, the Power Supply.

Transistor clock progress #2

Transistor clock progress #2

Transistor clock

Transistor clock troubleshooting

Transistor clock troubleshooting

This is from a kit. Sometimes the hour counter does not reset above 13th count cycle, when the room becomes hot.

Solder your own digital clock -  electronics kit by Science Hut

Solder your own digital clock - electronics kit by Science Hut

Solder your own digital

Transistor clock

Transistor clock

SMD

Nixie Transistor Clock

Nixie Transistor Clock

This is a build of a bit by Kabtronics.com. It is a

MKIII Prototype

MKIII Prototype

Transistor logic clock

B&F Enterprises Z1000 digital Nixie tube clock (1972, USA)

B&F Enterprises Z1000 digital Nixie tube clock (1972, USA)

Update: here is an old scan of the schematic for this