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Clock PCB V1.04
Harp clock IV-18





The IV-18 "harp clock"

The IV-18 VFD 'HARP CLOCK'

This clock is a real beauty. The IV-18 tube floats inside the aycrlic housing. The 2 pcbs are connected using 7 silver wires. So the clock looks like a harp from the backside.

The pcbs have been made professionally and the smd parts have already been soldered to the pcb, to make it as easy as possible for the clock builder.
The time is shown with 8 digits of the VFD tube 12-00-00. On the left hand side of the tube there is a dot that blinks in 2 Hz if a DCF77 antenna is connected.
A DCF-77 antenna can be purchased in the shop. If in DCF77 mode the clock switches between time and date. The date is shown in the middle part of the tube so it is easy to tell whether time or date is shown.

The clock sits inside an acyrlic cylinder and is sheltered against dust. The kit is easy to build.

We even produced templates to be able to mount the tube easily. All parts are made from high quality - the connectors a chrome-plated. All acrylic parts are laser-cut and CNC-milled.

You can purchase the kit here.

Technical details:
9-12 Volt AC 50 Hz or 60 Hz
used tube: VFD IV-18
current: 120 mA at 12 Volt
Optional DCF77 Module clock shows time (mains driven) or DCF77 timing
If in DCF77 mode, the clock shows the date for 5 seconds

What you get:
kit with all parts needed (SMD parts already solder on the pcb)
IV-18 VFD tube
Power supply 9-12 Volt AC
housing: Acrylic cylinder, 2 Acrylic side plates CNC milled and laser cut chrome plated connector
silver wire
wires for power supply socket and DCF77 socket
templates for mounting the tube correctly
2 x spacers for the 7 silver wires (pcb material milled)
2 sockets (power supply and DCF 77)

Downloads:
Documentation
Schematics and Bill of material
High resolution pictures showing how to build the clock
Small video showing time and date running (.mov format)